bluuebunny/crossref_metadata_2025 huggingface dataset:
Predictors of urban household variability of indoor PM2.5 in low socio-economic communities
Authors: Shezi Busisiwe , Jafta Nkosana , Asharam Kareshma , Tularam Hasheel , Barregård Lars , Naidoo Rajen N.
Published: May 2020

In epidemiological studies, levels of PM2.5 need to be estimated over time and space.
Protective effects of a novel Lactobacillus rhamnosus strain with probiotic characteristics against lipopolysaccharide-induced intestinal inflammation in vitro and in vivo
Authors: Li Xuesong , Hu Dong , Tian Yazhen , Song Yang , Hou Yichao , Sun Linlin , Zhang Yu , Man Chaoxin , Zhang Wei , Jiang Yujun
Published: May 2020

Lactobacillus rhamnosus JL-1 with potential probiotic properties reduced the LPS-induced expressions of inflammatory cytokines and intestinal damage through the TLR4/NF-κB signaling pathway.
Asiatic acid ameliorates obesity-related osteoarthritis by inhibiting myeloid differentiation protein-2
Authors: Yu Xingfang , Zheng Gang , Hu Zhichao , Tang Shangkun , Xu Jianchen , Shang Ping , Tang Qian , Liu Haixiao
Published: May 2020

Obesity is related to osteoarthritis (OA).
Enhancer recognition and prediction during spermatogenesis based on deep convolutional neural networks
Authors: Sun Chengzhang , Zhang Ning , Yu Peng , Wu Xiaolong , Li Qun , Li Tongtong , Li Hao , Xiao Xia , Shalmani Abdullah , Li Leijie , Che Dongxue , Wang Xiaodan , Zhang Peng , Chen Ziyu , Liu Tong , Zhao Jianbang , Hua Jinlian , Liao Mingzhi
Published: May 2020

Motivation: enhancers play an important role in the regulation of gene expression during spermatogenesis.
Elevated amyloidoses of human IAPP and amyloid beta by lipopolysaccharide and their mitigation by carbon quantum dots
Authors: Koppel Kairi , Tang Huayuan , Javed Ibrahim , Parsa Mehrdad , Mortimer Monika , Davis Thomas P. , Lin Sijie , Chaffee Alan L. , Ding Feng , Ke Pu Chun
Published: May 2020

CQDs were potent in inhibiting IAPP and Aβ amyloidosis, allowing hatching of zebrafish embryos into healthy larvae.
Correction: Solution synthesis of helical gold nanowire bundles
Authors: Tao Xiaolin , Li Hongyan , Yu Beibei , Wu Xuesong , Lu Yan , Wang Yawen , Chen Hongyu
Published: May 2020

Correction for ‘Solution synthesis of helical gold nanowire bundles’ by Xiaolin Tao et al., Nanoscale, 2019, 11, 19729–19735, DOI: 10.1039/C9NR04838C.
Discrete multifunctional sequence-defined oligomers with controlled chirality
Authors: Li Jie , Leclercq Maxime , Fossepré Mathieu , Surin Mathieu , Glinel Karine , Jonas Alain M. , Fernandes Antony E.
Published: May 2020

New synthetic strategy leading to discrete poly(triazole-urethane) oligomers with a large range of functional side groups, programmable stereochemistry and sequentiality.
Template-directed assembly of urchin-like CoSx/Co-MOF as an efficient bifunctional electrocatalyst for overall water and urea electrolysis
Authors: Xu Huizhu , Ye Ke , Zhu Kai , Yin Jinling , Yan Jun , Wang Guiling , Cao Dianxue
Published: May 2020

The urchin-like CoSx/Co-MOF as a bifunctional catalyst has good catalytic performance toward UOR and HER.
One pot rapid synthesis of ultra high strength hydrophobic bulk silica aerogels
Authors: Yue Xian , Chen Junyong , Li Huaxin , Xiao Zhou , Yu Xianbo , Xiang Junhui
Published: May 2020

One-step rapid synthesis of ultra-high strength hydrophobic bulk silica aerogels through neck-strengthening effect induced by high polycondensation reaction.
Organocatalytic asymmetric Friedel–Crafts alkylation/hemiketalization/lactonization cascade reactions: highly enantioselective synthesis of furo[2,3-b]benzofuranones
Authors: Xu Kunhua , Chen Wenming , Chen Xu , Wang Biao , Huang Jun , Tian Xu
Published: May 2020

A highly diastereo- and enantioselective organocatalytic Friedel–Crafts alkylation/hemiketalization/lactonization cascade reaction generating furo[2,3-b]benzofuranones in good to excellent yields with high stereoselectivities.
Density functional theory study of palladium cluster adsorption on a graphene support
Authors: Hussain Riaz , Saeed Muhammad , Mehboob Muhammad Yasir , Khan Saif Ullah , Usman Khan Muhammad , Adnan Muhammad , Ahmed Mahmood , Iqbal Javed , Ayub Khurshid
Published: May 2020

The geometric, thermodynamic and electronic properties of Pd–graphene nanocomposites are comprehensively studied through quantum mechanical methods.
X-ray absorption spectroscopy of archetypal chromium porphyrin and corrole derivatives
Authors: Cao Rui , Thomas Kolle E. , Ghosh Abhik , Sarangi Ritimukta
Published: May 2020

A Cr K-edge XAS study of paradigmatic chromium porphyrin and corrole derivatives has been carried out, providing key data for the Cr(iv) and Cr(v) oxidation states.
The role of Mg value and moisture content of decomposed products during the decomposition process of carnallite in aqueous solution: a novel monitoring method
Authors: Cheng Huaide , Hai Qingyu , Song Jianguo , Ma Xuehai , Li Changzhong
Published: May 2020

The amount of water is the crucial factor for the decomposition of carnallite in aqueous solution.
A robust ionic liquid magnesium electrolyte enabling Mg/S batteries
Authors: Bi Yujing , He Shuijian , Fan Chuanbin , Luo Jian , Yuan Bing , Liu T. Leo
Published: May 2020

An ionic liquid Mg electrolyte (MMAC-IL) is conveniently prepared by mixing MgCl2, AlCl3, Mg, and Pyr14TFSI. The MMAC-IL electrolyte with its great ionic strength can significantly suppress the shuttle effect of magnesium polysulfides and enabled a stable Mg–S battery.
Metal–organic framework-derived cupric oxide polycrystalline nanowires for selective carbon dioxide electroreduction to C2 valuables
Authors: Yang Fan , Deng PeiLin , Wang Qingyong , Zhu Jiexin , Yan Ya , Zhou Liang , Qi Kai , Liu Hongfang , Park Ho Seok , Xia Bao Yu
Published: May 2020

Enriching the interface: metal–organic framework-derived copper oxide nanowires with abundant crystalline interfaces contribute to the efficient electrochemical CO2 reduction towards fast hydrocarbon generation.
Multidimensional Na4VMn0.9Cu0.1(PO4)3/C cotton-candy cathode materials for high energy Na-ion batteries
Authors: Soundharrajan Vaiyapuri , Alfaruqi Muhammad H. , Lee Seulgi , Sambandam Balaji , Kim Sungjin , Kim Seokhun , Mathew Vinod , Pham Duong Tung , Hwang Jang-Yeon , Sun Yang-Kook , Kim Jaekook
Published: May 2020

NASICON-structured Na4VMn0.9Cu0.1(PO4)3 cotton candy-like cathode, which was employed for sodium-ion batteries, demonstrates superior electrochemical properties..
Li-triggered superior catalytic activity of V in Li3VO4: enabling fast and full hydrogenation of Mg at lower temperatures
Authors: Zang Jiahe , Wang Shaofei , Wang Fang , Long Ziyao , Mo Fangjie , Xia Yuanhua , Fang Fang , Song Yun , Sun Dalin
Published: May 2020

Li3VO4 doped MgH2 exhibits excellent hydrogen storage performance, in which the existence of Li stimulates the catalytic activity of V, and simultaneously suppresses the activity of O.
Robust adaptive filtering with variable risk‐sensitive parameter and kernel width
Authors: Liu Yingzhi , Dong Fei , Yu Xin , Qian Guobing , Wang Shiyuan
Published: May 2020

Similarity measures play a significant role in adaptive filtering. Previous work such as correntropy and kernel risk‐sensitive loss (KRSL), has successfully improved the technology of adaptive filtering in terms of robustness against outliers, fast convergence speed and high filtering accuracy. Based on KRSL, a newly raised similarity measure, complex KRSL (CKRSL), was proposed by extending KRSL to the complex domain. It successfully gains superior performance than other similarity measures in adaptive filtering algorithms. However, the minimum CKRSL (MCKRSL) algorithm may result in poor performance when the parameters are not properly chosen. In this Letter, an adaptive parameter selection is proposed to help the MCKRSL algorithm improve performance while overcoming the uncertainty in artificial selection. The proposed MCKRSL with variable parameters (MCKRSL‐VP) algorithm updates the risk‐sensitive parameter and kernel width by making the iteratively squared bias as small as possible. A moving average scheme is further used to smoothly update the risk‐sensitive parameter and kernel width. Finally, the authors verify that MCKRSL‐VP performs better than other algorithms by simulations.
Multi‐physics analysis and optimisation of high‐speed train pantograph–catenary systems allowing for velocity skin effect
Authors: Liu Xianrui , Yang Zefeng , Xiao Song , Duan Xuwei , Gao Guoqiang , Wei Wenfu , Wu Guangning , Rotaru Mihai , Sykulski Jan K.
Published: May 2020

A pantograph–catenary system (PCS) – an essential component to supply a high‐speed train (HST) – faces a variety of new challenges due to the continuously increasing train speeds. The HST traction system receives power via an electrical contact between the pantograph strip and the high‐voltage contact wire. This electrical contact is subject to serious mechanical shocks and significant electrochemical corrosion, making the modelling of the dynamic processes complicated, especially under high‐speed and heavy‐load conditions. The damage to the PCS – which is particularly noticeable at the edges of the pantograph strip – may become severe as the speed of the train rises. Moreover, as the speed increases, the distribution of the electrical current in the strip becomes uneven due to the velocity skin effect (VSE). To assess the impact of the VSE on the performance of PCSs, a multi‐physics model has been created and is reported in this study. The model has been validated through experiments and the main aspects of its functionality – such as the VSE, friction, and air convection – have been identified and analysed at different speeds. The impact of speed on the traction current and the behaviour of thermal sources have been explored. With the increasing speed, the phenomenon of current clustering at the trailing edge of the strip becomes quite dramatic, resulting in a thermal surge in the region of the strip with high current density. To mitigate the negative impact caused by VSE in the PCSs, an improved kriging optimisation methodology has been utilised to optimise the parameters of the PCS. Recommendations regarding the optimal design of the PCS are put forward to improve the current‐carrying performance and reduce the local temperature rise in the strip.
Design aspects, winding arrangements and applications of printed circuit board motors: a comprehensive review
Authors: Taqavi Omolbanin , Mirimani Seyed Mehdi
Published: May 2020

Printed circuit board (PCB) motors are witnessing increased interests and applications in the scientific communities and industry thanks to the advantages of compact size, high power density and efficiency, design flexibility, and low manufacturing cost. PCB has become a feasible and appropriate alternative to conventional round‐wire winding. It is applicable to any kind of electrical machines, such as axial‐flux machines and radial‐flux ones, in many applications. Moreover, it improves electromagnetic and thermal performances, which is affected by some design choices and winding arrangements. This study provides a comprehensive review of the PCB motors including the various aspects of initial electromagnetic design, performance analysis, winding arrangements, PCB coil design, and applications of PCB motors. Key references on the abovementioned aspects pertaining to the motor are discussed. Thus, offering researchers and engineers the most up‐to‐date information on the developments and progresses with the PCB motor design and technology.
Development of analytical thermal analysis tool for synchronous reluctance motors
Authors: Ghahfarokhi Payam Shams , Kallaste Ants , Podgornovs Andrejs , Belahcen Anouar , Vaimann Toomas
Published: May 2020

This study presents the principles of analytical lumped parameter model for a synchronous reluctance motor (SynRM) for traction application purposes. Particular focus is put on the calculation of the heat transfer from the machine's housing during the active and passive cooling. For this purpose, the area‐based composite correlations method is proposed. The approach is attractive due to its simplicity and the fact that it closely models the temperature of the machine's housing. Finally, the proposed thermal model is evaluated experimentally on a totally enclosed fan cooled SynRM, and good correspondence between the analytical and experimental results is obtained.
Local bifurcation and continuation of a non‐linear hydro‐turbine governing system in a single‐machine infinite‐bus power system
Authors: Zhang Jingjing , Xu Beibei , Chen Diyi , Li Huanhuan , Mahmud Md Apel , Govaerts Willy
Published: May 2020

Non‐linear bifurcation theory and numerical continuation of bifurcations are important methods to predict the oscillation evolution process of a hydro‐turbine governing system. The system's oscillation characteristic is directly related to three factors, namely the generator damping, excitation gain and proportion–integration–differentiation controller. Accordingly, three typical bifurcation and continuation scenarios related to these factors are studied, based on a non‐linear dynamical model of the governing system in which the excitation system and the power system stabiliser are included. Some important non‐linear dynamic phenomena, such as the equilibrium curves stability, bifurcation points location and limit cycle direction, are exhaustively depicted. Moreover, the dynamic behaviour of the system near bifurcation points is also illustrated through both time‐domain simulation results and phase trajectory diagrams. The results show that bifurcations of more and more complicated types are found starting from simple objects like equilibria, which is an important route to study the system's dynamic behaviour. An interesting aspect is that the hydro‐turbine governing system exhibits multistability, i.e. for some parameter value sets, there is a non‐connected set of stable equilibria. Finally, these results provide a predicted reference for the parameter setting to ensure the stability and safety of the hydro‐turbine governing system.
Three‐way decision of target threat decision making based on adaptive threshold algorithms
Authors: Li Bo , Tian Linyu , Han Yue , Chen Daqing
Published: May 2020

In order to solve the problems of existing threat assessment algorithms, a threat assessment method based on intuitionistic fuzzy three‐way decision method is proposed. Firstly, the indexes are described by theory of intuitionistic fuzzy sets on the basis of that the threat assessment index system is established. Then, TOPSIS method is used to calculate the target threat. Finally, the targets are classified by three‐way decision method according to the result of target threat. It is proved that it is feasible to introduce three‐way decision method into threat assessment. At the same time, an improved algorithm for calculating the threshold of three‐way decision is proposed. Experiments show that the improved algorithm has stable results and good classification effect.
Safety differently: A case study in an Aviation Maintenance-Repair-Overhaul facility
Authors: Plioutsias Anastasios , Stamoulis Konstantinos , Papanikou Maria , de Boer Robert J.
Published: May 2020

You This paper presents the findings from a ‘Safety Differently’ (SD) case study in aviation, and specifically in a maintenance, repair and overhaul (MRO) organisation in Southeast Asia. The goal of the case study was to apply a new method of safety intervention that is part of the Safety Differently toolkit and utilises a bottom-up approach. This research tested the extent to which these interventions could be embedded into a continuous improvement program in a highly controlled environment, namely an Aviation MRO. The interventions (called micro-experiments, ME) are considered as a flexible tool, which allows testing of process improvements in a safe to fail way, empowering the lower levels of the organisation, challenging safety related issues and revealing key areas in need of transformation. The ideas for the interventions considered in the case study were retrieved from interviews conducted with 50 mechanics, and include issues to address aviation safety and occupational health as well as quality. We elected to include all three categories in this study as the ME approach is applicable to all of these. This MRO case study showcases the benefits and limitations of the ME in aviation, revealing the conditions under which it may become useful. Future studies should further explore the role of complex and heavily controlled industries in similar bottom up approaches, so that interventions can become part of a continuous improvement plan.
Knowing versus understanding: adjusting the contextual lens in safety science
Authors: McCall Janice R.
Published: May 2020

Preparing for the unknown safety threat requires new ways of studying safety in today’s highly complex and dynamic environment. Qualitative inquiry offers advantages to expand the contextual lens in safety science by broadening understanding of the environment and conditions people negotiate in normal day-to-day operations. Through the narrative accounts of those with first-hand experience qualitative researchers seek to narrow the gap between work-as-done and work-as-imagined. It is through their individual experience, when analyzed collectively, that a greater context emerges. To aid in determining which research method is best for investigating safety phenomenon, this paper offers an overview of the philosophical underpinnings of qualitative research as well as recent examples from aviation, maritime, and mining.
Müssen meine digitalen Rechnungen unterschrieben sein?
Authors: Kämper Siegfried
Published: May 2020

Eine Kollegenfrage zur Notwendigkeit einer Unterschrift bei digitalen Rechnungen.
Theoretical calculation on isotope shifts of N(I)
Authors: Zhang Yan , Lin Qing-ning , Yang Tao , Yin Jian-ping , Wang Hai-ling
Published: May 2020

The special mass shift coefficient and field parameter factor of four multiples, 3s4P → 3p4P°, 3s4P → 3p4D°, 3s 2D → 5p 2D°, and 3s 2P → 3p 2P°, of 14N and 15N were studied using the multi-configuration Dirac-Hartree-Fock method and the relativistic configuration interaction approach. The normal mass shifts, special mass shifts, field shifts, and isotope shifts of N(I) were derived from the theoretical calculated normal mass shift parameter, special mass shift parameter and field parameter factor, and compared with the reported experimental measurements and theoretical results.
Key words when text forms the unit of study
Authors: Jeaco Stephen
Published: May 2020

Throughout the social sciences, there has been growing pressure to present effect sizes when publishing empirical data (see American Psychological Association, 2001; Parsons & Nelson, 2004). While it seems indisputable that for the majority of quantitative research foci, effect size is an essential element of statistical analysis, this paper argues that specifically for key word analysis in corpus linguistics, the means of reporting effect size must depend on the level of the unit of study of each investigation (single text, collection or large corpus). After exploring some main criticisms of the log-likelihood measure, this paper unpacks the parameters of different measures for keyness and how they might address underlying concerns. It maintains that for the exploration of foregrounded/deviant/salient/marked features in text, the use of log-likelihood scores to rank the results is still fit for purpose and coupled with Bayes Factors is a solid approach for key word analyses.
Turn structure and inserts
Authors: Rühlemann Christoph
Published: May 2020

Turns-at-talk often do not start with their main business but rather with a pre-start (Sacks et al., 1974). This paper investigates the correlation of pre-starts with inserts, one of three major word classes (Biber et al., 1999). Based on the BNC’s mark-up, I investigate how inserts are positionally distributed in large amounts of turns of varied lengths. The analysis shows that inserts are overwhelmingly attracted to turn-first positions, the likely location of pre-starts. Further, in a subsample of 1,000 ten-word turns manually coded for pre-starts, 86% of all inserts serve a pre-start function. The findings call into question current speech processing models that fail to factor in turn structure. Further, pre-starts have crucial sequential and interactional implications as early indicators whether the new turn “agrees” with the prior turn and are likely key signals aiding listeners’ action ascription.
Decision support system based on database system of genetic resources for Central Kalimantan local crops to develop ex situ and in situ conservation
Authors: Bhermana A , Susilawati
Published: May 2020

The results of exploration and inventory of local crop genetic resources from Central Kalimantan have been compiled into a genetic resource database system. The data and other information that have been integrated into a database system can be further developed systematically to become a decision support system so that it can be utilized as a useful tool in decision making. This system can be built by combining data, models and analytical tools in an application system with a user-friendly interface. This system can be utilized in the preparation of genetic resources development planning, such as for the determination of location for in situ and ex situ conservation areas in Central Kalimantan. The objective of this study was to develop such system, through the application of MS Access database as the Database Management System (DBMS) for storage (repository) and accessing database system applications that have been prepared interactively. The System is systematically designed to include geographic information system and based on the spatial analysis which can provide guidance and recommendation for zoning areas based on the suitability of plant commodities, both inside and outside of their natural habitat environment.
Simulation of QTL by sequencing for agronomic quantitative trait loci detection in small to medium population size in soybean
Authors: Satyawan D , Rijzaani H , Tasma I M
Published: May 2020

Quantitative Trait Loci by sequencing (QTL-seq) is a QTL detection method that utilizes the principles of Bulked Segregants Analysis. It detects alleles with extreme frequencies in whole-genome sequence data from two bulked populations with contrasting phenotypes. This approach is less laborious than QTL detection using linkage mapping, and the result had been shown to be comparable in the same mapping population. However, since the genomes of the two bulked populations are completely sequenced, it can facilitate further characterization of the QTL segment and the genes underlying the QTLs. In this study, QTL-seq was simulated using high-density SNP genotyping data from a recombinant inbred population consisting of 188 individuals. The genomes of both parents had been sequenced, and the SNP genotyping identified 2,207 SNP markers that were polymorphic and segregating in the population. Since the markers are dense enough and well distributed across the genome, they can be used to represent the alleles that can be obtained from whole genome resequencing of bulked individuals. The availability of genotype data for each individual in the mapping population also enabled the detection of QTL via linkage mapping. Using data generated from both approaches, various simulations were conducted to compare the results that could be obtained under ideal conditions, as well as less ideal ones such as when the QTL effects are small, the presence of skewed phenotype distribution, and a small number of bulked samples.
Studies on heritability and genetic variability for grain physical properties in Malaysian rice germplasm
Authors: Saidon S A , Kamaruzaman R , Razak M S F A , Ramli A , Sarif H M , Zuki Z M , Rahman S N A , Devarajan T , Sunian E
Published: May 2020

Genetic based information of different traits plays important role in varietal improvement of rice. Twenty rice accessions (Oryza sativa L.) obtained from National Rice Gene Bank were evaluated during main season 2015/2016 to estimate heritability, genetic variability and genetic advance for seven grain physical properties. Among the traits, milled grain length/width ratio, milled grain length, milled grain length after cooking and grain length exhibited high estimates of phenotypic coefficient of variation (PCV), and genotypic coefficient of variation (GCV). Highest broad sense heritability and genetic advance was obtained for grain length (98.66% and 62.25%), milled grain length (98.95% and 67.31%), milled grain length/width ratio (98.50% and 80.41%) and milled grain length after cooking (98.93% and 65.44%) which suggest these traits are most probably controlled by additive gene action and hence they can be fixed by selection. However, kernel elongation ratio showed lowest value of broad sense heritability and genetic advance (11.76% and 1.38%, respectively) and may suggest non-additive gene action in their inheritance and selection of this trait may difficult due to high environmental influences. Therefore, improvement of high quality rice with kernel elongation ability may require molecular marker application as it is highly affected by environment for precise selection.
Genetic variations of EMS-induced chili peppers (Capsicum annuum) cv. Gelora generate geminivirus resistant mutant lines
Authors: Manzila I , Priyatno T P
Published: May 2020

A mutation breeding program was conducted to improve chili pepper (Capsicum annuum) resistance to Geminivirus caused byPepper yellow leaf curl virus(PepYLCV). The disease can cause significant yield losses on chili pepper. This study was conducted to enhance genetic variation in pepper cv. Gelora using ethyl methanesulphonate (EMS) to obtain mutant lines resistant to PepYLCV. Exposure to an EMS solution of 0.5% (v/v) for 30 minutes was used for mutagenizing shoot tips to produce the first population (M1). After the treatment, shoot tips were cultured on MS medium to regenerate planlets that were subsequently acclimatized to produce M2population. A set of 2,955 mutant lines (M2) were screened in a greenhouse by inoculating PepYLCV isolate Segunung using white flies (Bemisia tabaci) as the virus vector. Six weeks after inoculation, the M2population was examined for symptoms of Geminivirus and was verified for the presence of PepYLCV infection by PCR using specific primer. The greenhouse assay successfully selected 47 lines (1.6%) of M2mutant population that showed no symptoms and no infection to PepYLCV compared to Gelora and Tanjung-2 varieties. Subsequent field test of M3mutant lines in Geminivirus endemic area in Lembang, West Bandung, revealed that 15 out of 47 lines showed high resistance to PepYLCV and have good agronomic characters including yield components. A set of primers corresponding to the PepYLCV infection which produced 678 bp in size indicated its good amplification in the susceptible mutant lines, confirming the PepYLCV resistance of 15 selected mutant lines. The resistant mutants were immune to PepYLCV and had potential to be released as improved varieties in the future.
Development of Laos Khao Kai Noi rice landrace (Oryza sativa L.) core collection as a model for rice genetic resources management in the Laos National Genebank
Authors: Vilayheuang K , Borrayo E , Kawase M , Watanabe K N
Published: May 2020

Khao Kai Noi rice is considered as an elite quality landrace in Laos, which has led to its germplasm conservation in the Laos National Genebank. As happens with other germplasm collections, a manageable yet representative sub collection has become an essential element for researchers and breeders to simplify many activities, including those related to crop improvement, phenotype-genotype correlation and determination of diversity hotspots. In this study, 109 accessions were used as a test collection for core collection development to determine the feasibility of collection reduction in a closely related rice group. Three core collections were developed by two established methodologies and evaluated by diversity indexes, allele retention, phylogenetic distribution and geographical location. Based on SSR molecular markers and PowerCore, a reduction to 24 accessions was achieved with the conservation of complete genetic diversity. A K-means based on reduction to 24 accessions rendered slightly lesser results while based on 12 accessions resulted in a 17% diversity loss. These core collections may be useful for genebank management, research and breeding activities in the future. Also, they may as well serve to estimate core collection development behavior in other landraces and cultivars, which is fundamental in genetic resources management and utilization.
The problems of ex situ genetic conservation at the universities in developing countries: lesson learn from Universitas Gadjah Mada
Authors: Taryono  , Indarti S , Supriyanta
Published: May 2020

Agriculture faces enormous challenges for providing sufficient food, feed and fuel raw materials for a growing global population. In the case of food, for instance, global food production must always increase to meet the projection of continuously increase of global food demand. The future challenges of food supply and demand can be addressed by diversification of food sources, introducing high yielding cultivars and improving culture techniques. Food sources can be diversified by collection and evaluation of genetic resources for nutritive values. In contrast, new varieties can be developed through breeding activities that also require genetic resource as genetic material. Genetic resources spread around the world, and to optimally utilize, genetic resource must be explored and conserved both by in situ and ex situ approaches. The genetic resource exploration through missions requires proper preparation including human resources, logistics and time allocations. Universitas Gadjah Mada (UGM) as a higher education institution has three big university missions, i.e. education, research and community service through student involvement. These three missions through student involvement have been applied to conduct the genetics resource exploration and ex situ conservation. The course of genetic resource collection and management has been introduced at different faculties, and because community service at the rural area for two-month times is compulsory for the student, UGM makes use of student to carry out genetic resource exploration and collection. The student must collect the passport data for the genetic resources and send the data to the Agriculture Innovation Center (AIC). In case that seed of genetic material can be found, student must collect also seeds and send to AIC for ex situ conservation. Based on UGM experience, ex situ conservation, especially seed genebank, faced sustainability problem due to insufficient human and funding resources. UGM integrates some approaches such as crop focusing, networking, student involvement in the characterization and evaluation, and breeding activities to solve such problems.
Growth response of red chilli plants to flowering phase against the application of Trichoderma and Pseudomonas fluorescens and P fertilizers
Authors: Sutarman
Published: May 2020

This study aims to determine the effect of the application of Trichoderma sp. Fungi. and Pseudomonas fluorescens bacteria as biofertilizer agents and P fertilizer doses as well as interactions between microbial biofertilizer agents and P fertilizer doses on vegetative growth and early appearance of red chilli flower flowers to the initial flowering period. This greenhouse experiment was arranged factorially in a completely randomized design. The first factor was the application of microbial biofertilizer agents consisting of no microbes, Trichoderma sp., And P. fluorescens, while the second factor was the dosage of P fertilizer per 5,000 g of soil planting medium consisting of 0, 0.5, and 1.0 g SP-36. Nine combinations of treatments repeated three times to obtain 27 experimental units. The variables observed were plant height, stem diameter, leaf area, wet weight and stover dry weight at 42 days after planting (DAP) and the beginning of flower emergence. The data were analyzed by 5% ANOVA followed by a 5% HSD Test to determine the difference in influence between treatments. The results showed a very significant interaction effect between the application of microbial agents and the dose of phosphate fertilizer to height, stem diameter, leaf area, wet weight and dry weight of stover and the initial flowering time at 42 DAP. The application of P. fluorescens bacteria as a biofertilizer agent combined with 0.5 g SP-36 fertilizer dose per 5,000 g of planting media showed the highest growth effect of red chili plants at age 42 DAP in terms of plant height, stem diameter, leaf area, stover wet weight, stover dry weight, and earlier flower appearance.
Analysis of academic service cybersecurity in university based on framework COBIT 5 using CMMI
Authors: Riadi I , Yanto I T R , Handoyo E
Published: May 2020

A secure academic information system is part of the college. The security of academic information systems is very important to maintain information optimally and safely. Along with the development of technology, academic information systems are often misused by some irresponsible parties that can cause threats. To prevent these things from happening, it is necessary to know the extent to which the security of the academic information system of universities is conducted by evaluating. So the research was conducted to determine the Maturity Level on the governance of the security of University Ahmad Dahlan academic information system by using the COBIT 5 framework on the DSS05 domain. The DSS05 domain on COBIT 5 is a good framework to be used in implementing and evaluating related to the security of academic information systems. Whereas to find out the achievement of evaluation of academic information system security level, CMMI method is needed. The combination of the COBIT 5 framework on the DSS05 domain using the CMMI method in academic information system security is able to provide a level of achievement in the form of a Maturity Level value. The results of the COBIT 5 framework analysis of the DSS05 domain use the CMMI method to get a Maturity level of 4,458 so that it determines the achievement of the evaluation of academic information systems at the tertiary level is Managed and Measurable. This level, universities are increasingly open to technological developments. Universities have applied the quantification concept in each process, and are always monitored and controlled for performance in the security of academic information systems.
Identification of earthquake types based on seismogram data
Authors: Hardani D N K , Megapiengga D A , Tamam M T
Published: May 2020

Indonesia is one country that has many active volcanoes, and it can have a high potential for earthquakes due to volcanic activity. Central Java is an area that has an active volcano, the Mount Slamet. Various kinds of earthquake signals, earthquake strength, and frequency are recorded using a seismogram. The process of recognizing seismic signal patterns using short-wave transformations has a higher chance of success. Several types of earthquakes that have occurred on the Mount Slamet. There are three types of earthquake data tested, Shallow Volcanic Earthquakes (VB), Gust, and Tremors. This study aims to identify the type of earthquake vibration signals recorded on the seismograph. Earthquake image processing system consists of several parts. The image is normalized to get the image in the time domain. Then the image is processed with two processes to determine the characteristics of the earthquake. The Fast Fourier Transform process is used to determine the strength of earthquake signals based on the frequency. The quantization process is used to take samples of each data in the time domain. In this study, the method used for identification is pattern recognition and decision trees. The identification system can recognize signals that are approached using the Root Mean Square, Average Power Spectrum, and statistical features. The results of tests carried out obtain 100% accuracy of each method.
River water level forecasting for flood warning system using deep learning long short-term memory network
Authors: Faruq A , Abdullah S S , Marto A , Bakar M A A , Samin  , Mubin A
Published: May 2020

Flood is considered chaotic, complex, volatile, and dynamics. Undoubtedly, its prediction is one of the most challenging tasks in time-series forecasting. Long short-term memory (LSTM) networks are a state of the art technique for time-series sequence learning. They are less commonly applied to the hydrological engineering area, especially for river water level time-series data for flood warning and forecasting systems. Yet it is inherently suitable for this subject. This paper examines an LSTM network for forecasting the river water level in Klang river basin, Malaysia. The river water level contains of single time series observed data, with time steps corresponding to hourly data and values corresponding to the water level or stage level in meters. In this study, prediction responses for river water level data using a trained recurrent neural network and update the network state function is applied. The result verified that the LSTM network with specified training set options is a promising alternative technique to the solution of flood modelling and forecasting problems. The performance indicates with the root mean square error, RMSE 0.20593 and coefficient of determination value, R
2 0.844 are closely accurate when updating the network state compared with the observed values.
IT balanced scorecard (IT BSC) based strategic framework for assessing the impacts of Business Strategic-IT alignment
Authors: Balafif S , Haryanti T
Published: May 2020

Alignment of IT strategy with business strategy to optimize the achievement of organizational goals. In general, there is a paradox between the application of information technology to the productivity directly. This paper aims to determine the suitability of the IT strategy with business strategy on company X by measuring IT Balanced Scorecard. The strategy implemented over a period of five (5) years. The study was conducted in the year to three (3). The results showed a low maturity level of application of IT for IT investment has not been implemented in accordance with the IT strategy. Anticipated funding has gradually become the cause of IT investments cannot be done thoroughly. The study presents recommendations for improvements every perspective ITBSC to achieve the expected level of maturity in the fifth year.
Local irregularity chromatic number of vertex shackle product of graphs
Authors: Umilasari R , Susilowati L , Slamin
Published: May 2020

Local irregular vertex labeling is one of graph labeling type that can be used as a tool for graph coloring. A mapping l is called local irregular vertex labeling if there are: (i) a mapping

l
:
V
(
G
)
→
{
1
2
…
k
}

as vertex irregular k -labeling and a weight

V
(
G
)
→
N

, for every

u
v
∈
E
(
G
)
w
(
u
)
≠
w
(
v
)

where

w
(
v
)
=

∑

{
u
∈
N
(
v
)
}

l
(
u
)

; and (ii) apt(l) = min{max{li
}. Thus, the labeling l induces a proper vertex coloring of G where the vertex v is assigned the color w(v). The local irregular chromatic number of G, denoted by

χ

l
i
s

(
G
)

is the minimum cardinality of the largest label over all such local irregular vertex labeling. In this paper, we determine the local irregular chromatic number of a vertex shackle product of graphs. The vertex shackle products of graphs, denoted by Shack (G, v, k), is the graph constructed from k copies of connected graph G and v as the linkage vertex.
The insertion of confidential information into digital images using blowfish cryptography and end of file steganography
Authors: Aribowo E , Suryadi A
Published: May 2020

Identity Theft Resource Centre revealed there were 668 cases of cybercrime occurring with a total number of lost data 22,408,258 started from January to July 2018. It indicates that there was a vulnerability in the defences from attacks carried out through the internet. Thus, the world of information systems should also be accompanied by a high level of security. The stages of system development were started from the analysis of system requirements, the design of the UML, implementation, and testing. The testing process into two-phase. Firstly, system output testing in the form of stego image with various criteria, namely imperceptible, fidelity, recovery, robustness, and histogram. Secondly, system feasibility testing using the SUS method. Based on the results, it revealed that the merging of the blowfish cryptographic method and the end of file steganography was not very effective because, based on the output testing with robustness criteria; it was proven that the message inserted into the image was damaged during extraction. The changes in the size of the original cover with the resulted stego image had increased file size with a ratio of 1: 5.5, meaning that each created stego image was five times the size of the original image.
Redesign and modification of torque measurement instrument for centrifugal pump
Authors: Widodo E , Nurwenda F , Akbar A , Mulyadi  , Fediyanto N , Fahruddin A
Published: May 2020

The main function of a pump is moving fluid through a pipe from one place to another. The dominant characteristic of a centrifugal pump is its output torque and power. Torque is obtained from the measurement of force using a dynamometer, then the result is multiplied by the moment measuring arm (L). Dynamometers are used to measure weight, which is influenced by gravity, which is mass (m) multiplied by the acceleration of gravity (g). The design concept of this equipment consists of a free moving motor body, dynamometer layout, safety pump, and fluid flow pipe. The pump is designed to be equipped with laboratory scale test kits and sketches of images made using ZWcad. The product design test is carried out using a comparison of the torque value to the centrifugal pump both in filled and unfilled condition. The difference in the value of the output torque is not too far from the theoretical calculation, so this torque measuring instrument is worth using.
Energy analysis desalination of single slope solar still
Authors: Siregar M A , Damanik W S
Published: May 2020

The surface of the evaporator glass in the seawater desalination process by utilizing solar energy as the main energy source is a phenomenon that has been widely studied and developed in order to get increased performance efficiency to produce fresh water. The heat energy from the sun will enter through the surface of the evaporator glass and absorbed by water inside the evaporator, while the evaporator wall is insulated using aluminium foil with a thickness of 20 mm in the hope that the heat energy received will not be wasted around the environment. The process of evaporation of seawater begins when the water has reached the point of evaporation without pressure and occurs naturally. When seawater starts to evaporate, it can be calculated the amount of heat energy absorbed by the water until it reaches the point of evaporation, in order to determine the increase in performance and efficiency of the desalination process. Efforts to improve continue to be done if it is still possible to increase the efficiency and performance of desalination devices with various energy utilization methods. After testing, the highest solar intensity obtained on the test day reached 420.85 W/m2, and the lowest solar intensity on the second day was 96.89 W/m2. The highest evaporation heat transfer coefficient reaches 10.54 W/m2 °C and the lowest is 4.42 W/m2 °C. The highest convection heat transfer coefficient reaches 51.15 W/m2 °C and the lowest heat conversion coefficient is 15.28 W/m2 °C. The total absorbed energy reaches 6.26 kW and the lowest absorbed energy reaches 1.37 kW. Energy efficiency reaching 85% and the lowest energy efficiency is 35%.
Design and Kinematics Analysis of a Percutaneous Needle Insertion Robotic System
Authors: Zhou Zhanfeng , Zhang Xu , Gao Yongzhuo , Wu Dongmei , Dong Wei
Published: May 2020

To overcome the limitations of conventional manual percutaneous needle insertion procedure, this paper proposes a percutaneous needle insertion robotic system with functions of biopsy and ablation. First, the robotic system, which integrates a 4-DOF positioning robotic arm and a 2-DOF RCM wrist, is designed. The 4-DOF positioning robotic arm can realize the exact position of the puncture needle and the 2-DOF RCM wrist can accurately adjust the orientation the needle. The combination of these two modules can ensure the kinematic decoupling of the position and posture of the robotic system. Second, the kinematics model of the robotic system based on classical D-H method is established, and the forward kinematics and inverse kinematics of the robotic system are analyzed. Finally, the manufacturing and assembly of the overall robotic system is performed and the robotic arm can successfully achieve percutaneous biopsy and ablation for tumor in urinary system.
Modeling and Analysis of Micro-cantilever Plate Piezoelectric Energy Harvester with a Tip Mass
Authors: Chen Li Hua , Hou Chao Ran , Xue Jiang Tao , Shan Lu Tong , Yang Feng Hong
Published: May 2020

With the development of MEMS (Micro-electro-mechanical Systems) techniques, research interest has deepened in micro piezoelectric harvesting device, which can supply electrical power for wireless sensors from ambient vibration. This paper proposes a nonlinear analysis of a micro-scale PEH (piezoelectric energy harvester), which is modeled by a micro-cantilever plate with two layers and a tip mass attached to the free end. Considering size effect and nonlinear curvature, based on strain gradient and inextensible plate theory, nonlinear dynamic equations of the micro cantilever piezoelectric energy harvester with tip mass are established by virtue of the Hamilton’s principle. The maximum output voltage of piezoelectric energy harvester with different tip mass is calculated respectively using MATLAB software. Comparative analysis confirms that an increase of K (the mass ratio of the tip mass to piezoelectric plate) reduces the natural frequency of energy harvester and significantly enhances the nonlinear phenomenon. In addition, when the mass ratio K exceeds 1, obvious superharmonic resonance phenomena generates, which considerably improves the output voltage of the proposed PEH in a lower frequency band. This study proposes an approach to enhance the output performance of micro-cantilever plate energy harvesters and broaden the bandwidth of PEH to adapt low-frequency ambient vibration.
High Definition Map Based Motion Plan and Control of Autonomous Vehicle on Structured Road
Authors: Zhang K , Wang S J , Ji L , Wang C
Published: May 2020

A high definition (HD) map based motion plan and control method of autonomous vehicle on structured road is proposed in this paper. The system is designed in a multi-layer structure: a motion planner and a motion controller, furthermore, the motion planner is consisted of a global path planner and a local trajectory planner. The inputs of the global path planner are HD map, start and goal state, Dynamic Program (DP) is used to plan a global path that connect these two states based on the lane-level structures and traffic rules extracted from HD map. The inputs of local motion planner are the planned global path, current host vehicle state and the surrounding dynamic object information, several candidate trajectories are generated in Frenet frame, and then the optimal one is chosen by a multi-term cost function calculation. Taking the vehicle dynamics under high speed into consideration, Model Predictive Control (MPC) is used in motion controller to track the planned target trajectory. Results of the conducted simulation tests show that the designed motion plan and control method works well in velocity keeping, vehicle following, stopping and going, and vehicle passing scenarios.