bluuebunny/crossref_metadata_2025 huggingface dataset:
Etching glass in the early Universe: Luminous HF and H2O emission in a QSO-SMG pair at z = 4.7
Authors: Lehnert M. D. , Yang C. , Emonts B. H. C. , Omont A. , Falgarone E. , Cox P. , Guillard P.
Published: May 2020

We present ALMA observations of hydrogen fluoride, HF J = 1–0, water, H2O (220–211), and the 1.2 THz rest-frame continuum emission from the z = 4.7 system BR 1202-0725. System BR 1202-0725 is a galaxy group consisting of a quasi-stellar object (QSO), a sub-millimeter galaxy (SMG), and a pair of Lyα emitters. We detected HF in emission in the QSO and possibly in absorption in the SMG, while water was detected in emission in both the QSO and the SMG. The QSO is the most luminous HF J = 1–0 emitter that has yet been found and has the same ratio of HF emission-line to infrared luminosity, LHF/LIR, as a small sample of local active galactic nuclei and the Orion Bar. This consistency covers about ten orders of magnitude in LIR. Based on the conclusions of a study of HF emission in the Orion Bar and simple radiative transfer modeling, the HF emission in the QSO is excited either by collisions with electrons (and H2) in molecular plasmas irradiated by the AGN and intense star formation, or predominately by collisions with H2, with a modest contribution from electrons, in a relatively high temperature (∼120 K), dense (∼105 cm−3) medium. The high density of electrons necessary to collisionally excite the HF J = 1–0 line can be supplied in sufficient quantities by the estimated column density of C+. Although HF should be an excellent tracer of molecular outflows, we found no strong kinematic evidence for outflows in HF in either the QSO or the SMG. From a putative absorption feature in HF observed against the continuum emission from the SMG, we conducted a bootstrap analysis to estimate an upper limit on the outflow rate, Ṁoutflow ≲ 45 M⊙ yr−1. This result implies that the ratio of the molecular outflow rate to the star formation rate is Ṁoutflow/SFR ≲ 5% for the SMG. Both the QSO and the SMG are among the most luminous H2O (220–211) emitters currently known and are found to lie along the same relationship between LH2O (220 − 211)/LIR and LIR as a large sample of local and high-redshift star-forming galaxies. The kinematics of the H2O (220–211) line in the SMG is consistent with a rotating disk as found previously but the line profile appears broader than other molecular lines, with a full width at half maximum of ∼1020 km s−1. The broadness of the line, which is similar to the width of a much lower resolution observation of CO(2-1), may suggest that either the gas on large scales (≳4 kpc) is significantly more disturbed and turbulent due either to interactions and mass exchange with the other members of the group, or to the dissipation of the energy of the intense star formation, or both. Overall however, the lack of significant molecular outflows in either source may imply that much of the energy from the intense star formation and active galactic nucleus in this pair is being dissipated in their interstellar media.
Indicators of the Agricultural Industry Management System: Innovation and Investment Readiness Due to the Digital and Technological Transformation from the Perspective of an Ontological Approach
Authors: Shokhnekh Anna V.
Published: May 2020

The article presents indicators of the agricultural industry management system: doing business in a digital and technological transformation from the perspective of an ontological approach. It is important to note that it is impossible to transform under the requirements of the modern world without the introduction of innovation. However, innovation is always marked by financial costs and loss of time, which reduces the innovative activity of organizations in the agricultural sector, and, therefore, determines the diagnosis of innovation and investment policy. Forming an indicative methodology for justifying, measuring and developing the readiness of the agricultural sector’s management system to conduct entrepreneurship in the context of digital and technological transformation from the perspective of an ontological approach is evident as a process of formation and implementation of investment potential to ensure the release of innovative competitive products based on an advanced technology platform.
The Mechanism for Identifying and Responding to Real and Potential Threats in the System of Ensuring Economic Security in Innovation and Investment Policy
Authors: Shokhnekh Anna V. , Melnikova Yuliya V. , Dugina Tatiana A. , Nemchenko Alexander V. , Mironov Alexey A.
Published: May 2020

Forming the concept of the essence of economic security of innovation and investment policy makes it possible to use it as the foundation for making managerial decisions aimed at enhancing such attributes of sustainability as competitiveness, paying capacity, enterprise, and adaptability. The mechanism for identifying and responding to real and potential threats in the system of ensuring economic security in the innovation and investment policy will make it possible to carry out a set of interrelated measures of an economic, legal, organizational nature: to formulate and apply a system of measures to predict risks; to prevent impacts leading to the weakening of internal and external threats to vital cycles in innovation and investment policy at the macro, meso and micro levels; provide a sense of security for the management and personnel, as well as capital involved in innovation and investment policy. The article explores the areas of economic security based on the "Eulerian circles", reflecting different levels of security.
A comparative study and graphical analysis in designing and operation of Solar Thermal circular concentrator for enhancing efficiency of solar concentrating system
Authors: Kulkarni Mohan , Dingre Sunil , Kulkarni Chandrakant
Published: May 2020

The present line concentrator system with constant concentration ratio exhibits rise in temperature of working media, however if the difference between outlet and inlet temperature of working media is large then they exhibit lower efficiency. Also the rate of fall of efficiency with increase in its temperature difference is high. To overcome this problem it is proposed to have a variable concentration ratio concentrator system. The variable concentration ratio is achieved by employing receiver consisting of the pipes having different diameters; with the larger diameter pipe at start followed by small diameter receiver. Thus, the concentrator system will have different diameter receivers offering variable concentration ratio system. This concept is confirmed with the help of G.O. Lof, Fester and Duffie Beck paper. The present paper describes above concept by graphical analysis carried out for the newly proposed circular line concentrator with variable concentration ratio. The results of superimposition of graphs leads to confirmation for the promisingly use of variable concentration ratio receivers for enhancing efficiency of solar concentrating system.
A Review of Recent Experimental and Theoretical Research of Dew Point Evaporative Coolers
Authors: Patunkar Prashant , Dingare Sunil , Bhojwani Virendra
Published: May 2020

Evaporative cooling is one of the techniques to lower the ambient air temperature according to the requirements. The technique includes the injection of moisture in the coming air, thus increasing its specific humidity. This technique can cool the air up to wet bulb temperature of the incoming air. In the recent past, the techniques are developed to lower the temperature of air without addition of moisture in the incoming air. These techniques demonstrate that the incoming air temperature can be approached near the dew point temperature of the incoming air. The present paper essentially focuses on the recent theoretical and experimental research of dew point evaporative coolers. Different flow configurations of heat exchange mediums, optimization of geometrical parameters, performance parameters (wet bulb and dew point effectiveness), energy efficiency ratio and energy saving potential are the key elements to study the prospects of dew point evaporative coolers over the conventional refrigeration systems operated by mechanical means. Dew point evaporative cooling technology is environmental friendly and has the potential in reducing the impact on earth due to global warming.
Solar photovoltaic module performance characterisation using single diode modeling
Authors: Sayyad Javed K. , Nasikkar Paresh S.
Published: May 2020

Single or double diode electrical modeling of SPV module gives valuable results which will help to identify the exact behavior of SPV module under the normal operating condition. Accurate modelling of SPV module will also help to calculate internal resistances (Rs, Rsh) and parasitic of the SPV module. The main contribution of this work is the stepwise simplification of the current equation of single and double diode electrical model of SPV module. Then the single diode model of SPV module having 36 SPV cells in series is simulated in LTspice simulator. Simulated results are compared with labelled electrical parameters which shows close proximity to the labelled parameter at particular values of series and shunt resistance. This paper also presents the effect of variation in series resistance (Rs) and shunt resistance (Rsh) on the performance of the SPV module under normal operating condition. The dependency of SPV electrical parameters (Imax, Vmax, Pmax, FF, η) with the variation of series resistance (Rs) and shunt resistance (Rsh) is simulated, and the effects are discussed in details.
Statistical Method to Extract Evoked Potentials from Noise
Authors: Benchabane Besma , Benkherrat Moncef , Djelel Salah
Published: May 2020

Evoked Potentials are induced by visual or auditory stimulation. The Evoked Potentials represent transient electrical activities of some limited brain regions. The signal-noise ratio (SNR) of the EPs is typically around -10 dB. In order to study brain activities related to information processing in the brain, one has to “extract” the single EPs from the noise. We propose a method does not require a priori information concerning the characteristics (time, frequency) of the signal and does not use a template. The method proposed in this work use the wavelet transform associated with a statistical test.
Analysis and Examination of Heart distress from ECG signal using Artificial Intelligence.
Authors: Chaudhari Leena B. , Upasani Dhananjay E.
Published: May 2020

Health data analysis is usually based on a comparison of derived health measures to predefined thresholds. Symptoms can be observed if a value is above or below a threshold. Early detection of signs of heart failure allows the prediction of strokes of heart failure and can therefore prevent these. So identifying “accurate” criteria is the most important task. The accuracy of an experiment depends strongly on the accuracy of the criteria used. Congestive heart failure (CHF) occurs when the heart can not pump sufficient blood for a stable physiological condition. CHF usually occurs when the coronary artery blockage causes the heart tissue to become acidic. The data used to analyze data such as Linear Regression, Missing Enrollment Data, Search Signal, Clinical Data Protection Programs, and Early Adaptive Alarm. The proposed system involves models including server and data warehouse processing, pre-processing, extraction classification characterization in this paper. Classification of heart defects and prediction of heart failure by using applied classifier for hybridization, guideline for treating patients as a gym, level of stress management. In this article, the program tracks the heart disease patients, predicts atrial fibrillation and ventricular fibrillation, and alerts patients when the critical condition occurs.
Development of field-scale composite biorack constructed wetland – startup phase
Authors: Koli Mitil , Munavalli Guru
Published: May 2020

Constructed Wetlands (CW) with Biorack (BR) technology have been studied extensively in recent years with positive outcomes compared to conventional CWs. A field scale application of the same has been worked upon in the Composite Biorack Constructed Wetland (CBCW) which is a secondary wastewater treatment facility of the Decentralized Wastewater Treatment System (DWTS) at Walchand College of Engineering, Sangli (M.S.), India. The CBCW is a multi-compartment system comprising of compartments with brickbats as supporting medium and BR Compartments (BRC) and has been in operation since May, 2018. The CBCW is vegetated with Typha angustifolia L. and Canna indica macrophytes. Being a unique CW, studies on difficulties aroused during the startup phase need to be addressed so as to arrive at proper troubleshooting techniques for future references. The paper addresses various issues, specifically growth of vegetation and their early wiltage in CBCW, for a period of 150 days. Using alternative modes of plantation, it is concluded that vegetation acclimatization, proper suspension and grip of the bulb and roots of saplings in racks, fluctuating inflow of wastewater are few reasons influencing development of vegetation. An improvement by about 12% is obtained in COD removal in the latter period of study implying establishing of vegetation in CBCW.
Exploring societal participation in making cities smart
Authors: Manjrekar Shraddha Mahore , Deshmukh Manali
Published: May 2020

The word ‘Future’ has been synonymous to ‘Development’ for most of the people. Architects of the Nation strive for a well-developed state, where it reaches towards enhanced living conditions than the present. In this regard of development, structure of Indian government is well defined. The policies designed at central level envision the total development. These policies make the local bodies function on the same lines. They make an impression in common people’s life that there are some positive changes in the cities. These policies also mark an identity, e.g., after implementation of city Development Plans under JNNURM (Jawaharlal Nehru, National Urban Renewal Mission), the buses bought for BRT (Bus Rapid Transport) had become identity of this policy. The meaning of Smart Cities in India also has been interpreted by people in many ways. For cities to become smarter it needs a holistic approach in developing a sustainable urban eco system and thus the roles of various stakeholders become very important in executing this mission. Not only the investors, financial organizations, planners, architects and people in construction industry but the citizens too have role in making cities smart. People of all age, gender, ability and disability are responsible in making a city smart. Education and awareness is the key for making them aware of their participation in the process of development. This paper also mentions the role of educational institutes to make people understand the essence of development.
Performance Evaluation of Baffled and Floating Hybrid Constructed Wetland Operated Under Field Conditions
Authors: Dasare Shrutee , Munavalli Guru
Published: May 2020

Baffled and Floating Hybrid Constructed Wetland (BFHCW) consisting of constructed wetland with brickbat medium and Floating Treatment Wetland (FTW) was developed and operated under actual field flow conditions. BFHCW was vegetated with dual-species (Typha angustifolia L. and Canna indica). The performance of continuously operated system was evaluated for varied Hydraulic Loading Rate (HLR) and Organic Loading Rate (OLR) for a longer period. The system was also assessed for controlled flow rate resulting more uniform OLR and HLR. The results showed that COD removal efficiency was enhanced by 5 to 15% with controlled flow than uncontrolled highly fluctuating flow conditions. HLR has more impact on COD removal than OLR. BFHCW is effective to an extent of 25 to 40% for COD removal. BFHCW is found to be cost effective and reasonably efficient treatment for pretreated domestic wastewater.
Morphologic and genetic characterisation of Corsican and Sardinian trout with comments on Salmo taxonomy
Authors: Delling Bo , Sabatini Andrea , Muracciole Stephane , Tougard Christelle , Berrebi Patrick
Published: May 2020

Both morphological and molecular data are presented and discussed for indigenous Salmo sp. from Corsica and Sardinia, here called Tyrrhenian trout. For comparison, morphological data obtained from museum specimens, including the Algerian S. macrostigma, are discussed in the light of recent and new molecular findings. In total, 29 measurements and 20 meristic characters were taken from each specimen. Out of the meristic characters, 12 were obtained by means of X-ray. One important morphometric character in the present study is the size of the head measured from premaxilla to posterior margin of preoperculum. This character was particularly stable in all Tyrrhenian trout, showing relatively large head compared to Atlantic trout and to S. macrostigma. On the contrary, other characters like body punctuations, black and white edges of fins, body depth or number of epurals in the caudal skeleton are quite polymorphic. In certain meristic characters, range of variation of Tyrrhenian trout even exceeds that of the extensive comparative material. Each trout has been genetically characterized. New haplotypes from Tyrrhenian trout were discovered, belonging to three mitochondrial lineages viz. Adriatic, marble and Mediterranean, however, Adriatic haplotypes are dominant. Comparing morphological and genetic data, observed morphology lacks any obvious correlation to mitochondrial lineages and it is concluded that Tyrrhenian trout show no particular affinity to S. macrostigma from Algeria.
PET/CT in der Strahlentherapie
Authors: Krempien Robert , Münter Marc , Dresel Stefan
Published: May 2020

Das therapeutische Konzept einer suffizienten Strahlentherapie ist die Applikation einer ausreichend hohen therapeutischen Dosis im anvisierten Zielvolumen bei gleichzeitiger maximaler Schonung des umgebenden Normalgewebes. Es zeigt sich jedoch mehr und mehr, dass die traditionellen Anatomie-basierten Schnittbildgebungen (CT, MRT) die Tumorausdehnung häufig über- oder unterbewerten. Seit der Einführung der Positronen-Emissions-Tomografie (PET) in die klinische Routine wird angestrebt, die morphologische Basis der Bestrahlungsplanungs-CT durch die funktionellen Informationen der PET zu ergänzen und somit zu einer biologisch funktionellen Bestrahlungsplanung zu gelangen. Durch eine präzise Koregistrierung der funktionellen, metabolischen Daten mit den für die Bestrahlungsplanung erforderlichen anatomischen Informationen aus den CT-Aufnahmen kommt die PET/CT-Technik den Anforderungen der Hochpräzisionsbestrahlung entscheidend entgegen. Klinische Studien bei nahezu allen Tumorentitäten zeigen einen erheblichen Einfluss der PET/CT auf die Konturierung der Zielvolumina. Erhebliche Änderungen zeigen sich in 20 % bis über 50 % der Fälle gegenüber rein CT-basierten Konturierungen. Im Folgenden haben wir die wesentlichen Daten in Bezug auf Staging und Zielvolumendefinition und soweit vorhanden auf Therapieansprechen zusammengefasst.
Blasenkarzinom − Komplikationen der Harnableitung
Authors: Pfister David , Niegisch Günter
Published: May 2020

Auch heute noch stellt die radikale Zystektomie mit Anlage einer Harnableitung einen der komplikationsträchtigsten Eingriffe in der Uro-Onkologie dar. Insbesondere im Langzeitverlauf, aber auch perioperativ spielen dabei durch die Harnableitung bedingte Probleme eine wesentliche Rolle.

Perioperativ stehen dabei im Wesentlichen gastrointestinale Probleme wie etwa ein Ileus, aber auch Infekte und frühe Komplikationen der unterschiedlichen Anastomosen im Vordergrund. Während ein Ileus ebenso wie perioperative Infekte i. d. R. medikamentös behandelt werden können, erfordern Insuffizienzen der intestinalen Anastomose regelhaft und Insuffizienzen der ureterointestinalen Anastomosen häufig operative Revisionen.

Im Langzeitverlauf können Narbenbildungen zu chronischen Harnabflussbehinderungen und bei kontinenten Harnableitungen zur Steinbildung führen und ebenso wie parastomale Hernien weitere Therapien erforderlich machen. Funktionelle Darmprobleme können die Lebensqualität der Patienten nachhaltig beeinflussen.

Durch eine verbesserte Vorbereitung präoperativ und die begleitenden Maßnahmen während des stationären Aufenthalts können nicht operationsbedingte Komplikationen signifikant reduziert werden.

Die Zystektomie mit der therapieassoziierten Morbidität ist ein Paradebeispiel für eine zentrumsbasierte Operation um Komplikationen sowohl perioperativ als auch im weiteren Follow-up zu reduzieren.
Conceptual Design, Implementation, and Evaluation of Generic and Standard-Compliant Data Transfer into Electronic Health Records
Authors: Blitz Rogério , Dugas Martin
Published: May 2020

Objectives The objective of this study is the conceptual design, implementation and evaluation of a system for generic, standard-compliant data transfer into electronic health records (EHRs). This includes patient data from clinical research and medical care that has been semantically annotated and enhanced with metadata. The implementation is based on the single-source approach. Technical and clinical feasibilities, as well as cost-benefit efficiency, were investigated in everyday clinical practice.

Methods Münster University Hospital is a tertiary care hospital with 1,457 beds and 10,823 staff who treated 548,110 patients in 2018. Single-source metadata architecture transformation (SMA:T) was implemented as an extension to the EHR system. This architecture uses Model Driven Software Development (MDSD) to generate documentation forms according to the Clinical Data Interchange Standards Consortium (CDISC) operational data model (ODM). Clinical data are stored in ODM format in the EHR system database. Documentation forms are based on Google's Material Design Standard. SMA:T was used at a total of five clinics and one administrative department in the period from March 1, 2018 until March 31, 2019 in everyday clinical practice.

Results The technical and clinical feasibility of SMA:T was demonstrated in the course of the study. Seventeen documentation forms including 373 data items were created with SMA:T. Those were created for 2,484 patients by 283 users in everyday clinical practice. A total of 121 documentation forms were examined retrospectively. The Constructive cost model (COCOMO II) was used to calculate cost and time savings. The form development mean time was reduced by 83.4% from 3,357 to 557 hours. Average costs per form went down from EUR 953 to 158.

Conclusion Automated generic transfer of standard-compliant data and metadata into EHRs is technically and clinically feasible, cost efficient, and a useful method to establish comprehensive and semantically annotated clinical documentation. Savings of time and personnel resources are possible.
A subtitling stalemate
Authors: McKenzie Rory
Published: May 2020

The Dark Horse (2014) is a highly successful New Zealand film that exemplifies a strong
multilingual and multicultural landscape where the Māori language and cultural concepts, as well as specific examples of New
Zealand English co-exist within the one film. This linguistic and cultural complexity is a key part to the film, therefore
retaining this in a translation becomes a challenging responsibility for the subtitler. This article first introduces the
restrictions and intricacies of subtitling in general, and then analyses specific scenes from the commercial Italian subtitled
version of The Dark Horse, highlighting the translation choices made by the subtitler when confronted with
challenges pertaining to scenes involving multilingualism (in the form of English and Māori), culturally specific terminology (the
use of New Zealand English idioms), as well as the representation of register for children from low socio-economic backgrounds.
Alternative subtitles are proposed that seek to better represent the richness of the source text’s language and cultural
references.
Depth-dose measurement corrections for the surface electronic brachytherapy beams of an Esteya® unit: a Monte Carlo study
Authors: Valdes-Cortez Christian , Ballester Facundo , Vijande Javier , Gimenez Vicent , Gimenez-Alventosa Vicent , Perez-Calatayud Jose , Niatsetski Yury , Andreo Pedro
Published: May 2020

Three different correction factors for measurements with the parallel-plate ionization chamber PTW T34013 on the Esteya electronic brachytherapy unit have been investigated. This chamber type is recommended by AAPM TG-253 for depth-dose measurements in the 69.5 kV x-ray beam generated by the Esteya unit.

Monte Carlo simulations using the PENELOPE-2018 system were performed to determine the absorbed dose deposited in water and in the chamber sensitive volume at different depths with a Type A uncertainty smaller than 0.1%. Chamber-to-chamber differences have been explored performing measurements using three different chambers. The range of conical applicators available, from 10 to 30 mm in diameter, has been explored.

Using a depth-independent global chamber perturbation correction factor without a shift of the effective point of measurement yielded differences between the absorbed dose to water and the corrected absorbed dose in the sensitive volume of the chamber of up to 1% and 0.6% for the 10 mm and 30 mm applicators, respectively. Calculations using a depth-dependent perturbation factor, including or excluding a shift of the effective point of measurement, resulted in depth-dose differences of about ± 0.5% or less for both applicators. The smallest depth-dose differences were obtained when a shift of the effective point of measurement was implemented, being displaced 0.4 mm towards the center of the sensitive volume of the chamber. The correction factors were obtained with combined uncertainties of 0.4% (k = 2). Uncertainties due to chamber-to-chamber differences are found to be lower than 2%.

The results emphasize the relevance of carrying out detailed Monte Carlo studies for each electronic brachytherapy device and ionization chamber used for its dosimetry.
Zigzag approach to higher key rate of sending-or-not-sending twin field quantum key distribution with finite-key effects
Authors: Jiang Cong , Hu Xiao-Long , Xu Hai , Yu Zong-Wen , Wang Xiang-Bin
Published: May 2020

Odd-parity error rejection (OPER), in particular the method of actively odd parity pairing (AOPP), can drastically improve the asymptotic key rate of sending-or-not-sending twin-field (SNS-TF) quantum key distribution (QKD). However, in practice, the finite-key effects have to be considered for the security. Here, we propose a zigzag approach to verify the phase-flip error of the survived bits after OPER or AOPP. Based on this, we can take all the finite-key effects efficiently in calculating the non-asymptotic key rate. Numerical simulation shows that our approach here produces the highest key rate over all distances among all existing methods, improving the key rate by more than 100% to 3000% in comparison with different prior art methods with typical experimental setting. These verify the advantages of the AOPP method with finite data size. Also, with our zigzag approach here, the non-asymptotic key rate of SNS-TF QKD can by far break the absolute bound of repeater-less key rate with whatever detection efficiency. We can even reach a non-asymptotic key rate more than 40 times of the practical bound and 13 times of the absolute bound with 1012 pulses.
Protected superconductivity at the boundaries of charge-density-wave domains
Authors: Leridon Brigitte , Caprara Sergio , Vanacken J , Moshchalkov V V , Vignolle Baptiste , Porwal Rajni , Budhani R C , Attanasi Alessandro , Grilli Marco , Lorenzana José
Published: May 2020

Solid 4He may acquire superfluid characteristics due to the frustration of the solid phase at grain boundaries. Here, introducing a negative-U generalized Hubbard model and a coarse-grained semiclassical pseudospin model, we show that an analogous effect occurs in systems with competition among charge-density-waves (CDW) and superconductivity in the presence of disorder, as cuprate or dichalcogenide superconductors. The CDW breaks apart in domains with topologically protected filamentary superconductivity at the interfaces. Our transport measurements, carried out in underdoped La2−x
Sr
x
CuO4, with the magnetic field acting as a control parameter, are shown to be in excellent agreement with our theoretical prediction. Assuming superconductivity and CDW phases have similar energies, at intermediate temperatures, the magnetic field drives the system from a fluctuating superconductor to a CDW as expected in the clean limit. Lowering the temperature, the expected clean quantum critical point is avoided and a filamentary phase appears, analogous to ‘glassy’ supersolid phenomena in 4He. The transition line ends at a second quantum critical point at high-fields. Within our scenario, the filamentary superconducting phase is parasitic with CDW and bulk superconducting phases playing the role of primary competing order parameters.
Cat swarm optimization and Levenberg-Marquardt for model identification and prediction identification and prediction tuberculosis disease spreading
Authors: Nuari A , Damayanti A , Pratiwi A B
Published: May 2020

Tuberculosis (TB) is an infectious disease caused by the bacterium Mycobacterium tuberculosis and can cause death. Based on the prevalence rate, Indonesia ranks third after India and China as the countries with the highest number of TB sufferers in the world. Models identification and prediction are needed to minimize and anticipate problems that can occur. In applying the model, Cat Swarm Optimization and the Levenberg-Marquardt are used. The purpose of this study is to obtain the prediction result based on the model identification in TB disease spreading using a swarm optimization algorithm and Levenberg-Marquardt. The identification is intended to analyze the spread of TB disease based on actual data. The process begins with estimating the parameters in the model using the Cat Swarm Optimization algorithm. After getting the optimal parameters, the acquisition of the model uses Levenberg-Marquardt. Based on the implementation of the program on the spread of TB disease in East Java in the period of the first quarter of 2002 to the fourth quarter of 2017, the MSE of training and prediction process were 0.000225563 and 0.0085307, respectively. The MSE value from the prediction process shows that the Cat Swarm Optimization and Levenberg-Marquardt can be used to identify models and predict the spread of tuberculosis.
Clustering of fish freshness using discrete wavelet transform and Kohonen self organizing map
Authors: Anvy J , Damayanti A , Pratiwi A B
Published: May 2020

Fish freshness is one of the criteria of fish, whether it is good or not for consumption. A fish can be categorized as a fresh condition if it looks like alive fish. The observation about level of fish freshness generally can be checked directly through the human senses, but along with the development of technology, fish freshness observation can detected using a technology. One of them is by utilizing digital image processing. The purpose of this research is to cluster fish into three clusters namely fresh, not fresh, and rotten using the discrete wavelet transformation and Kohonen Self Organizing Map (SOM). Stages of clustering of the fish freshness are pre-processing, feature extraction, and clustering. At the pre-processing stage, RGB to grayscale images are converted. After pre-processing, the next stage is image decomposition in pre-processing result which is applied using Discrete Wavelet Transform (DWT) Haar level 3 and takes the statistical parameters of the mean and standard deviation from the horizontal detail coefficient. Mean and standard deviation obtained are used as the input in clustering process using Kohonen SOM. Based on the test result, it showed that the percentage of fish was clustered correctly is 92,857%.
On Cartesian product of intuitionistic Q-fuzzy ideal on ordered semigroup
Authors: Hidayat N , Yanti I , Fitriah Z , Miftah D , Anam S , Rahman S I , Hidayat F
Published: May 2020

IntuitionisticQ-fuzzy set is one of the results of the development of the concept of fuzzy sets by entering the degree of membership and nonmembership. In this paper, we would like to discuss the process of forming Cartesian product from intuitionisticQ-fuzzy ideal on ordered semigroup. Some of the properties of the Cartesian product are created and proven.
Jacobson graph construction of ring

ℤ3n

, for n>1
Authors: Novictor A , Susilowati L , Fatmawati
Published: May 2020

A group is called a ring if the group is a commutative under addition operation and satisfy the distributive and assosiative properties under multiplication operation. Suppose R is a commutative ring with non-zero identity, U is the unit of R, and J(R) is a Jacobson radical. Jacobson graph of a ring R denoted by ℑ
R
is a graph with a vertex set is R\J(R) dan edge set is {(a, b)| 1 − ab ∉ U}. The purpose of this research is to construct a Jacobson graph of ring Z
3

n
with n > 1. The results show that Jacobson graph of ring Z
3

n
is a disconected graph with two components.
The validity of the properties of real numbers set to hyperreal numbers Set
Authors: Masithoh R , Guswanto B H , Maryani S
Published: May 2020

This research discusses the validity of the properties of real numbers set to hyperreal numbers set, i.e. algebraic, ordered, and completeness properties, by using a finitely additive measure. This finitely additive measure is a map from the power set of natural numbers set onto set {0,1}. The subset of natural numbers set has measure zero if it’s finite and one if it’s infinite. The set of hyperreal numbers is constructed from equivalence classes of the set of all sequences of real numbers by using a relation involving the finitely additive measure, that is, two sequences of real numbers are said to be related if and only if those two sequences are the same almost everywhere. In the hyperreal numbers set, there exist infinitesimal numbers besides 0. Infinitesimal number is a number which is less than any positive real number and greater than any negative real number. So, in hyperreal number set, there are some smallest positive numbers. The results show that the hyperreal numbers set is an ordered and complete field.
Introducing Colorimetric Analysis with Document Scanner for High School Students
Authors: Fatoni A , Supiani  , Dwiasi D W , Anggraeni M D
Published: May 2020

Spectrophotometer is modern analytical instrument for analysis the amount of substance based on the color change. However, for high school laboratory practice, only few schools had this instrument for chemical analysis. There are many studies reported the use of daily life electronic for colorimetric analysis such as smartphone, scanner and digital camera. This work demonstrated the used of document scanner for colorimetric glucose determination for easy learn the daily life instrument as analytical device. The color detection was based on the reaction of glucose with glucose oxidase enzyme to produce H2O2. The H2O2 was then reacted with TiOSO4 to produce yellow color. The color formation was captured with a document scanner and the digital image was analyzed using ImageJ software. The result of the used of document scanner showed Horwitz Ratio of 0.40, recovery of 98.4%, linear responses from 0.5 mM to 3.0 mM (r = 0,9989), limit of detection of 0.15 mM and limit of quantification of 0.40 mM.
Improved reuse and affinity of enzyme using immobilized amylase on alginate matrix
Authors: Zusfahair  , Ningsih D R , Kartika D , Kurniasih M , Nofiani R , Fatoni A
Published: May 2020

Enzyme immobilizations were widely used to increase their shelf life which is essential for the world’s industries. Therefore, amylase immobilized using Na-alginate as a matrix is necessary optimized and characterized. The parameters measured in the optimization of immobilization are the determination of the concentration of sodium alginate and contact time. Characterizations were conducted to determine the optimum concentration of substrate, the value Vmax, Michaelis-Menten constant (KM), pH, temperature, incubation time, and test reuse. The process of immobilized amylase activity test was performed in a continuous flow system using a reactor, and its sugar levels were determined using the Dinitro Salisilat Method (DNS). The results reveal that the immobilized amylase commercial has optimum concentration of Na-alginate of 5% (w/v) and contact time of 90 minutes with an immobilization efficiency value of 43.02%. Furthermore, the immobilized amylase has optimum activity at substrate concentrations of 3.5% (w/v), pH 4, incubation temperature of 40 °C, and a reaction time of 20 minutes with the value of the activity of 2760.4 U / mL. KM value of free amylase and immobilized amylase row are 0.18 mM and 0.15 mM, repectively. The value of KM immobilized amylase is smaller than the free enzyme. It proves that the immobilized amylase has a high affinity for the substrate. The immobilized amylase can be used up to 12 times with a value of the residual activity of 56.7%.
Application of High Performance Liquid Chromatography Method for Triadimenol Analysis in Water Sample
Authors: Hermawan D , Cacu  , Suwandri  , Fatoni A , Mudasir  , Aboul-Enein H Y
Published: May 2020

Triadimenol is the most important triazole fungicide used for prevention and treatment of plant fungal disease. A simple high performance liquid chromatography (HPLC) method for triadimenol analysis in water sample is reported in this study. The optimized HPLC system using C18 column was achieved using mobile phase composition containing acetonitrile-water (70:30, v/v), a flow rate of 1.0 mL/min, UV detection at 220 nm, and analysis time within 2.5 min. The calibration graph was linear in the range 5 to 50 mg/L with r2 of 0.9997. The limit of detection (LOD) and limit of quantification (LOQ) obtained were 1.23 and 4.12 mg/L, respectively. Combination of solid phase extraction (SPE) and the optimized HPLC method has been successfully applied for the determination of triadimenol in water sample with a recovery of 94.24 % (RSD = 5.38%, n = 4). The proposed HPLC method provides short analysis time, high reproducibility and high sensitivity.
The Effect of Multiplanes Graphene Flakes Coating on Ag Nanowire Transparent Conductive
Authors: Fiqalbi Nur , Dwi Cahyaningrum Ratih , Prihandoko Bambang , Harsojo
Published: May 2020

The performance of transparent conductive Ag nanowire (TCA) has the potential to replace the indium titanium oxide (ITO) glass. However, TCA suffered from environmental parameters such as humidity and temperature that may change its resistance and its transparency or its optical transmission. We study the effect of multiplanes graphite coated on the TCA. We fabricated the multiplanes graphite using hydrothermal process directly the solution of graphite flakes and cetyltrimethylammonium bromide. The synthesis of this process showing that the material was in the form of multiplanes graphite flakes (MGF). The coated MGF on the TCA and showing that there is an improvement in the resistance of the TCA although its optical transmission in the wavelength range of 300 nm-800nm decreased by about 40%. The best result showed that using one microgram MGF coated on 4cm2 TCA may change the resistance of the TCA changed from 4.5 MΩ/sq down to 0.17 MΩ/sq.
Study of Transparent Conductive of Ag Nanowire Under Ambient Environment
Authors: Dwi Cahyaningrum Ratih , Harsojo
Published: May 2020

Silver nanowire (AgNW) has the potential to be fabricated as a transparent conductive to replace the indium-tin-oxide (ITO) based glass. However, the transparent conductive suffered from environment effect due to the connectivity of the wires. In this study, we retested the properties of transparent conductive made about two years ago and study its resistance and optical transmission. The morphology was observed using a transmission electron microscope (TEM), and the crystalline was tested using XRD, while the resistance, as the quantity related to the conductance, as tested using a two-probe method, while the transmittance was measured using UV-VIS spectrometer. The result indicated that although the wire and the crystalline only slightly change the resistance changes dramatically due to the problem of connectivity between wires.
Estimation of Potential of Iron Sand in The Eastern Coastal Area of Cilacap Regency Based on The Local Magnetic Anomalies Data
Authors: Sehah  , Kurniawan M A , Andriyanto I , Arismawan B , Risyad A , Wibowo A M , Raharjo S A , Sugito
Published: May 2020

Estimation of potential of iron sand in the Eastern Coastal Area of Cilacap Regency, Central Java Indonesia based on the magnetic anomalies data has been carried out in March 2016 – October 2018. The research area covers five coastal areas, i.e. Widarapayung, Western Binangun, Eastern Binangun, Western Nusawungu, and Eastern Nusawungu. The results of the research which are acquired show that iron sand deposits are estimated to be discovered in all coastal areas, where the greatest potential is the Western Nusawungu Coastal and the smallest potential is the Eastern Nusawungu Coastal. The range of the local magnetic anomalies data of the Western Nusawungu Coastal area is -711,38 – 1701,84 nT, whereas the range of the local magnetic anomalies data of the Eastern Nusawungu Coastal area is -498,66 – 201,73 nT. The potential of iron sand is based on the range value of the local magnetic anomalies data of each research area, because the local magnetic anomalies data are directly assosiated to the magnetic properties of iron minerals.
CO oxidation through the formation of carboxyl intermediate on Pt(111) surface: A first principles study
Authors: Zulaehah S , Cahyanto W T , Fitriani I N , Abdullatif F , Widanarto W , Effendi M
Published: May 2020

The interaction of gas molecules with metal surfaces is extensively studied both theoretically and experimentally. An example of this interaction is the oxidation reaction of carbon monoxide (CO) by hydroxyl (OH) catalyszed by platinum (Pt) in the direct methanol fuel cells (DMFCs). Here, the work offers a simulation of the CO oxidation reaction by the formation of carboxyl group intermediates (COOH) based on the total energy calculation of density functional theory (DFT). The discussion here focuses on the energetics for the reaction of CO(ads) + OH(ads) → COOH(ads) and the decomposition of COOH(ads) → CO2(ads) + H(ads) on the Pt(111) surface. The calculation results show that the formation of COOH(ads) requires an energy of 0.39 eV, whereas the decomposition of COOH(ads) into CO2(ads) and H(ads) requires an activation energy of 0.14 eV. These results indicate that oxidation of CO by the COOH intermediate on Pt(111) surface is possible to occur, considering that the total energy required for the reaction is very low.
New phenomena with the f(R)-theory of gravitation in a central gravitational field
Authors: Van Ky Pham , Thi Hong Van Nguyen , Anh Ky Nguyen
Published: May 2020

The f(R)-theory (of gravitation) is an extension of Einstein’s general theory of relativity (GR) but if a spherically symmetric vacuum solution of the Einstein equation in the GR is always stationary, a spherically symmetric vacuum solution of an f(R)-theory is not necessary stationary. This may have interesting consequences. In comparison with the GR, a process such as a planet’s motion (its orbital precession and parameters) and a gravitational deflection of light now get a correction which is a constant for a static central field and varies with time for a non-static central field even from a source of a constant mass, unlike the corresponding GR value not changing in the same situation. In particular, a spherically symmetric source may radiate gravitational waves. This phenomenon cannot happen in the GR. The present work is an extended version based on a presentation in the 44th Vietnam conference on theoretical physics (Dong Hoi, 29 July - 01 August 2019).
Magnetic orders of Heisenberg models with arbitrary spin in semi-fermionic representation
Authors: Thi Thanh Nga Pham , Toan Thang Nguyen
Published: May 2020

In 1988 Popov and Fedotov (PF) proposed a new method for spin Hamiltonians free of the local constraint problem for spin S = 1/2 and S = 1. Later, this approach has been extended for arbitrary spin. PF formalism has been used to study magnetic orders in some spin S = 1/2 and S = 1 Heisenberg models. In this report we show how to study the low temperature phases of quantum Heisenberg models with arbitrary spin by means of PF method. We work out the analytical expressions needed for studying ordered phases of Heisenberg models in one-loop approximation.
Molecular dynamics simulation of amorphous silica under pressures
Authors: Trang G T T , Kien P H , Hung P K , Hong N V
Published: May 2020

Models of amorphous silica have been produced at 500 K, and in pressures range

0
÷
100

GPa by molecular dynamics simulation. Topological analysis is performed based on the basic units and transition to different a-types, where a is the Oxx
and Oxy
(x, y = 4, 5, 6). The simulation shows that the fraction of different types of basic units varies strongly and the mid-range structure modifies stronger than the short-range structure under pressure. In the

0
÷
100

GPa pressure range, structure of amorphous silica occurs the transformation from D4-to D6 domain which correspond to the intervals of

0
÷
5
,
5
÷
15

and

15
÷
100

GPa. We also found a number of O
456 connected with three different Si atoms. Upon compression, the structural change is accompanied with the

O

x
x

→

O

x
y

transition and two parallel processes: merging and splitting of domains which relate to the change of domain-boundary atoms.
Students’ representation based on high order thinking skills for the concept of light
Authors: Fatmaryanti S D , Ashari  , Wahidah V S
Published: May 2020

Light is one of the concepts in physics which is close with daily life. This descriptive study aims to explore student representations in terms of high order thinking skills (HOTS) on the concept of light. The research subjects were 30 students of junior high school in Purworejo. Data collection techniques using a test with three items in the form of descriptions based on indicators of HOTS. The data obtained were analysed qualitatively and the presentation of data analysis results through tables. The results showed that there are three forms of students’ representation in understanding the concept of light, namely mathematics, picture and verbal representation. Image representation is the most commonly used concept of shadow while the concept of light propagation uses more verbal representation. The use of diverse representations in solving problems can facilitate the improvement of HOTS.
Effect of soil mass motion on nonlinear forced vibrations of beams on elastic foundation
Authors: Wang Man , Ma Jianjun , Han Shujuan
Published: May 2020

Based on the nonlinear equation of motion of the beam on the Winkler foundation with the consideration of finite-depth soil mass motion, the nonlinear forced vibrations of the beam were investigated. Applying the Galerkin method and the method of multiple scales, the frequency-response equation and the second-order approximate solution of the primary resonance of the beam were obtained. Then, by means of the numerical calculation and parameter analysis, the effects of parameters about the soil mass motion on the frequency-response curves of the beam on the Winkler foundation were explored, such as foundation depth, soil mass, and Winkler foundation stiffness. The results show that the effect of the soil mass motion on the nonlinear forced vibration of the beam on the Winkler foundation is significant. When the effect of soil mass motion is introduced into the equation of motion of the beam, the range and the softening behavior of primary harmonic resonance of the system are reduced.