bluuebunny/crossref_metadata_2025 huggingface dataset:
Lehre in den psychosozialen medizinischen Fächern in Zeiten der COVID-19-Pandemie – erste Erfahrungen
Authors: Koelkebeck Katja , Baessler Franziska , Bittner Robert , Frodl Thomas , Gradl-Dietsch Gertraut , Janowitz Deborah , Jordan Katja-Daniela , Kluge Ina , Matthes Oliver , Pinilla Severin , Robitzsch Anita , Strauß Maria , Speerforck Sven , Watzke Stefan , Spitzer Philipp
Published: May 2021

Zielsetzung In besonders auf Kommunikation basierenden Fächern wie Psychiatrie, Psychotherapie und Psychosomatik stellt die Lehre in Zeiten der COVID-19-Pandemie eine besondere Herausforderung dar. In dieser Übersicht berichten Dozierende und Lehrbeauftragte von ihren Erfahrungen im E-Teaching und teilen innovative Lösungsansätze.

Methodik Wir präsentieren eine erfahrungsbasierte Sammlung von Vorgehensweisen, die sich auf Lehre und Prüfungsformate sowie auch aktivierende Methoden beziehen.

Ergebnisse Es konnte eine Reihe von nützlichen Tools für die Lehre erstellt werden. Dazu gehören Lehrvideos mit Schauspielpatienten, strukturierte Hausaufgaben zur Verfassung von psychopathologischen Befunden, strukturierte Übergaben und praktische Prüfungen im Videochatformat. Es wurden Podcasts mit ÄrztInnen- und PatientInnen-Interviews und der Unterricht anhand von cineastischem Material genutzt, um das Interesse und die Motivation der Studierenden an dem Fachgebiet zu fördern.

Schlussfolgerungen Die Umstellung auf Online-Formate ermöglicht Chancen und Vorteile für die Weiterentwicklung von zeit- und ortsunabhängigem Lernen. Eine schnelle Veränderung in diese Richtung birgt jedoch auch Nachteile. Insbesondere in der Lehre in den psychosozialen Fächern ist die direkte PatientInnen- und Studierendeninteraktion wichtig, um Übertragungs- und Gegenübertragungsphänomene sowie atmosphärische Aspekte aufzugreifen. Studien zur Effektivität der neu entwickelten Formate und didaktische sowie technische Schulungen von Dozierenden zur digitalen Lehre sind notwendig.
Quadratic magneto-optical effect in hexagonal non-collinear antiferromagnets
Authors: Zhao H. C. , Xia H. , Zhao Z. R. , He T. Y. , Ni G. , Chen L. Y. , Zhao H. B.
Published: May 2021

Quadratic magneto-optical (MO) effects can be utilized to investigate the spin order in antiferromagnetic (AFM) materials; however, the previously reported studies were all limited in antiferromagnets with collinear AFM order. Here, we develop a phenomenological theory to investigate the quadratic MO effects in hexagonal non-collinear AFM crystals with triangular spin structures. Based on the permittivity tensor up to the second-order in magnetization, we derive the formula to describe the quadratic MO responses and perform numerical calculations to obtain the MO rotation angle for different AFM spin configurations and sample orientations. For the sample with its spin plane lying perpendicular to the surface plane, we have revealed the emergence of quadratic MO response, which exhibits a strong dependence on the light incident angle. The MO rotation angle shows an approximately sinusoidal variation with a periodicity of 180° when the sample is rotated around its surface normal. The size of the MO response and its deviation from the sinusoidal form are analyzed for different values of the second-order permittivity tensor elements. This study provides important insights into the non-collinear AFM spin-induced quadratic MO effect, which may be used as a guidance for optical detections of the non-collinear AFM order, and, in particular, the ultrafast spin dynamics using the optical pump–probe technique.
Molecular beam deposition of a new layered pnictide with distorted Sb square nets
Authors: Ohno M. , Uchida M. , Nakazawa Y. , Sato S. , Kriener M. , Miyake A. , Tokunaga M. , Taguchi Y. , Kawasaki M.
Published: May 2021

While the family of layered pnictides ABX2 (A—rare or alkaline earth metals, B—transition metals, and X—Sb/Bi) can host Dirac dispersions based on Sb/Bi square nets, nearly half of them have not yet been synthesized for possible combinations of the A and B cations. Here, we report the fabrication of EuCdSb2 with the largest B-site ionic radius, which is stabilized for the first time in thin film form by molecular beam deposition. EuCdSb2 crystallizes in an orthorhombic Pnma structure and exhibits antiferromagnetic ordering of the Eu magnetic moments at TN = 15 K. Our successful growth will be an important step for further exploring novel Dirac materials using film techniques.
Contact resistance optimization for development of thermoelectric modules based on bismuth telluride nanowires
Authors: Ben Khedim Meriam , Cagnon Laurent , André Emmanuel , Pairis Sébastien , Serradeil Valerie , Bourgault Daniel
Published: May 2021

This paper presents a study of the contact resistance between a metal M (M = Ni, Pt, and Au) and an array of n-type Bi2Te3−xSex thermoelectric nanowires deposited through the electrodeposition process in the alumina membrane. Contact resistances between different metals and thermoelectric nanowires have been tested and characterized after optimization of the mechanical thinning and polishing process of the top part of the membrane. A low areal contact resistance of 87 µΩ cm2 obtained with Au as the contact electrode is very encouraging for the development of thermoelectric modules based on nanowires in their membranes.
Research on blocking interference for digital radio station under UWB EMP
Authors: Zheng Jianyong , Wei Guanghui , Qi Chao
Published: May 2021

In order to make certain of the blocking impact of the ultra-wideband electromagnetic pulse (UWB EMP) on a radio communication station, an EMP injection test was conducted to study the blocking interference of a digital radio station under a step pulse train and double exponential pulse train. Combined with waveform parameters such as the pulse repetition rate (PRR), the concept of influence time when the UWB EMP was irradiated on the equipment under test (EUT) was introduced, and the model was established. According to the experimental results, the blocking impact of the EUT under the UWB EMP depended on factors such as waveform, PRR, and amplitude. The relationship between the PRR and the sensitive bit error rate could be determined by the effect test. In the case of a low PRR, the sensitive voltage threshold of the EUT was irrelevant to the PRR, and the effect was the monopulse effect. When the PRR reached above the reciprocal of the influence time, the sensitive voltage threshold of the EUT decreased with the increase in the PRR, which conformed to the cumulative multiple pulse effects.
Study on the damage evolution mechanism of geomaterials/soil interfaces under the action of drawing
Authors: Yi Fu , Qi Xupeng , Li Jun , Li Hui , Fan Ming , Jiang Shan
Published: May 2021

It was of great significance to study the damage evolution mechanism of geomaterial/soil interfaces in landfill seepage control systems to evaluate the slope instability of landfill sites with high dam and large storage capacity. In this paper, the interfacial shear behaviors of geomaterial/soil were studied by drawing test. At the same time, the interface meso-test was used to analyze the change characteristics of geomaterial/soil interfaces during the drawing process. The results showed that under the synergistic action of the interface friction of geotextile/geomembrane and the reinforced shear band at the interface of geotextile/soil, the shear strength and interface stability of the composite geomaterial/soil interface not only increased but also improved. In order to describe the shear deformation and softening characteristics of the geomaterial/soil interfaces, a constitutive model of the interface was established based on the statistical damage theory to study the damage evolution mechanism of the interface under the action of drawing. The fitting results showed that the fitting correlation between the interface constitutive model established in this paper and the shear strength–drawing displacement curves obtained from the tests was greater than 0.97, which indicated that the constitutive model could better describe the shear deformation characteristics of the interface.
Re-illumination of streamer stems under either rising or non-changing positive electric fields in long air gaps
Authors: Zhao Xiangen , Wang Xiankang , Liu Xiaopeng , Liu Yang , Gan Quan , Qi Ruihan , He Junjia
Published: May 2021

Characteristics of the streamer stem are essential for the study on the stable leader inception. Experiments are conducted to observe the re-illumination of streamer stems under either rising or non-changing positive electric fields in long air gaps, preceding the inception of a stable leader. Based on the simultaneously measured applied voltage, discharge current, direct images, and schlieren images, two typical types of stem re-illuminations are identified and show great differences. For the stem re-illumination under the rising electric field, it is accompanied by an abrupt elongation of stem channel, intense optical radiation, and a current superposed on at least two asynchronous current pulses, while for that subjected to the nearly non-changing electric field, there are no elongation of stem channel, a much weaker light emission, and a single, double exponential current pulse. Moreover, the latter case shows obvious periodicity. A comparative analysis of experimental results shows that factors triggering these two types of stem re-illuminations may be also different in which not only the electric field but also its time derivatives play an important role. These findings can further deepen the understanding of the streamer stem before the leader inception.
Ultrafast X-ray scattering offers a structural view of excited-state charge transfer
Authors: Yong Haiwang , Xu Xuan , Ruddock Jennifer M. , Stankus Brian , Carrascosa Andrés Moreno , Zotev Nikola , Bellshaw Darren , Du Wenpeng , Goff Nathan , Chang Yu , Boutet Sébastien , Carbajo Sergio , Koglin Jason E. , Liang Mengning , Robinson Joseph S. , Kirrander Adam , Minitti Michael P. , Weber Peter M.
Published: May 2021

Significance

Charge transfer plays a fundamental role in many areas of chemistry, physics, biology, and materials science. The spatial redistribution of electrons is typically associated with changes in the molecular geometry. A comprehensive understanding of this process requires atomic spatial resolution and femtosecond temporal resolution. Here, we exploit an X-ray free-electron laser to determine the excited-state structures during charge transfer with sub-Ångström resolution. Important behaviors such as bond elongation and contraction and reorientation of functional groups during the charge transfer are discovered, demonstrating the substantial information on excited-state molecular structure that becomes accessible through ultrafast X-ray scattering measurements.
Constructing Turing complete Euler flows in dimension 3
Authors: Cardona Robert , Miranda Eva , Peralta-Salas Daniel , Presas Francisco
Published: May 2021

Significance

What kind of physics might be noncomputational? In this article, we address the appearance of undecidable phenomena in fluid dynamics, proving the existence of Turing complete fluid flows on a three-dimensional geometric domain. Our strategy fuses the computational power of symbolic dynamics with geometric techniques from contact topology and its connection with hydrodynamics unveiled by Sullivan, Etnyre, and Ghrist more than two decades ago. The type of flows that we consider are stationary solutions to the incompressible Euler equations. Taking these steady flows as initial data, we obtain global solutions to the Navier–Stokes equations that can simulate just a (fixed) finite number of steps of any Turing machine. This raises the challenging question of the Turing-completeness of Navier–Stokes.
A positive feedback loop reinforces the allergic immune response in human peanut allergy
Authors: Zhou Xiaoying , Yu Wong , Lyu Shu-Chen , Macaubas Claudia , Bunning Bryan , He Ziyuan , Mellins Elizabeth D. , Nadeau Kari C.
Published: May 2021

Food allergies are a leading cause of anaphylaxis, and cellular mechanisms involving antigen presentation likely play key roles in their pathogenesis. However, little is known about the response of specific antigen-presenting cell (APC) subsets to food allergens in the setting of food allergies. Here, we show that in peanut-allergic humans, peanut allergen drives the differentiation of CD209+ monocyte-derived dendritic cells (DCs) and CD23+ (FcєRII) myeloid dendritic cells through the action of allergen-specific CD4+ T cells. CD209+ DCs act reciprocally on the same peanut-specific CD4+ T cell population to reinforce Th2 cytokine expression in a positive feedback loop, which may explain the persistence of established food allergy. In support of this novel model, we show clinically that the initiation of oral immunotherapy (OIT) in peanut-allergic patients is associated with a decrease in CD209+ DCs, suggesting that breaking the cycle of positive feedback is associated with therapeutic effect.
Generation of runaway electrons in plasma after a breakdown of a gap with a sharply non-uniform electric field strength distribution
Authors: Beloplotov D V , Tarasenko V F , Shklyaev V A , Sorokin D A
Published: May 2021

The paper is devoted to the study of the initiation and formation of a negative streamer in a sharply inhomogeneous electric field and the generation of runaway electrons (REs) in air and helium at atmospheric pressure and below, as well as in sulfur hexafluoride at low pressure. Nanosecond voltage pulses of negative polarity with an amplitude of 18 kV were applied across a point-to-plane gap 8.5 mm long. The studies were carried out using broadband measuring sensors and equipment with picosecond time resolution, as well as using a four-channel ICCD camera. Using a special method for measuring the dynamic displacement current caused by the redistribution of the electric field during streamer formation, the waveforms of voltage, discharge current, RE current, and dynamic displacement current were synchronized to each other, as well as to ICCD images. Data on the generation of REs with respect to the dynamics of streamer formation were obtained. It was found that REs are generated not only during the breakdown of the gap, but also after that. It has been found that the formation time of explosive emission centers affects the generation of REs after breakdown. Based on the measurement data of the voltage, discharge current, and dynamic displacement current, the electron concentration in the plasma channel after breakdown and the electric field strength near the surface of the grounded electrode were calculated.
Influence of ionic conductivity and dielectric constant of the catalyst on DBD plasma-assisted CO2 hydrogenation into methanol
Authors: Feliz Maxwell Quezada , Polaert Isabelle , Ledoux Alain , Fernandez Christian , Azzolina-Jury Federico
Published: May 2021

Dielectric barrier discharge (DBD) plasma technology is a promising method for producing methanol from CO2 hydrogenation as the reaction can be run at atmospheric pressure and temperatures below 100 °C. The choice of the catalyst is crucial and has to be made not only according to its activity and selectivity towards the desired product, but its effect on plasma properties. In this work, the influence of several important catalytic properties of DBD plasma such as the dielectric constant of the catalyst and ionic conductivity is studied. The effects of the catalyst support and the addition of promoters on CO2 hydrogenation under DBD plasma are also studied. To this end, Cu and Cu–ZnO catalysts supported on γ-Al2O3 and a template-free seedless ZSM-5 (Si/Al molar ratio of 23) were prepared to study their catalytic performance on CO2 hydrogenation into methanol under DBD plasma. These catalysts were fully characterized by XRD, SEM, N2 physisorption, temperature programmed reduction and in situ FTIR CO adsorption. The relative complex permittivity of the catalysts was measured and the ionic conductivity was estimated using a modified Debye model. In this paper, the role of the ionic conductivity of the catalyst was identified as a crucial parameter in plasma-assisted CO2 hydrogenation. It was found that the lower the value of the ionic conductivity, the better the CO2 conversion. Indeed, high ionic conductivity reduces the density of the plasma and decreases the dissociation of CO2. The highest CO2 conversion value (34.0%) was observed for the nonconductive alumina support, whereas the highest methanol yield (0.5%) was observed for the zeolite-supported Cu–ZnO catalyst.
Intrinsic geometry and director reconstruction for three-dimensional liquid crystals
Authors: Pollard Joseph , Alexander Gareth P
Published: May 2021

We give a description of the intrinsic geometry of elastic distortions in three-dimensional nematic liquid crystals and establish necessary and sufficient conditions for a set of functions to represent these distortions by describing how they couple to the curvature tensor. We demonstrate that, in contrast to the situation in two dimensions, the first-order gradients of the director alone are not sufficient for full reconstruction of the director field from its intrinsic geometry: it is necessary to provide additional information about the second-order director gradients. We describe several different methods by which the director field may be reconstructed from its intrinsic geometry. Finally, we discuss the coupling between individual distortions and curvature from the perspective of Lie algebras and groups and describe homogeneous spaces on which pure modes of distortion can be realised.
Spectroscopic properties and energy transfer in Nd3+/Yb3+ co-doped yttrium aluminum garnet
Authors: Song Yan-Jie , Liu Qian-Qian , Zong Nan , Wang Zhi-Min , Cui Da-Fu , Zhang Shen-Jin , Bo Yong , Peng Qin-Jun
Published: May 2021

High-quality Nd,Yb:YAG crystal with 5 at. % Yb3+ and 0.5 at. % Nd3+ was grown using the Czochralski method. A complete optical characterization was reported including absorption, excitation spectra and luminescence lifetime measurements at room temperature and emission spectra at temperatures ranging from 300 K to 800 K. The emission spectra of Nd3+/Yb3+ co-doped YAG were measured for different excitation wavelengths 808 nm and 940 nm. The presence of Yb3+ emission after excitation in the 4F5/2 and 4F3/2 levels of Nd3+ together with the 4I9/2→ 4F5/2 and 4I9/2→ 4F3/2 bands of Nd3+ in the excitation spectra of Yb3+ ions confirm that energy transfer occurs from Nd3+ to Yb3+. On the other hand, the back transfer from Yb3+ to Nd3+ can be neglected. This conclusion is also in agreement with the vanishing overlap between the Yb3+ emission and Nd3+ absorption. The analysis of the luminescence decay curves obtained after pulsed excitation has been used to further explore energy transfer processes and the interaction mechanism.
Similarity-constrained task-related component analysis for enhancing SSVEP detection
Authors: Sun Qiang , Chen Minyou , Zhang Li , Li Changsheng , Kang Wenfa
Published: May 2021

Objective. Task-related component analysis (TRCA) is a representative subject-specific training algorithm in steady-state visual evoked potential (SSVEP)-based brain-computer interfaces. Task-related components (TRCs), extracted by the TRCA-based spatial filtering from electroencephalogram (EEG) signals through maximizing the reproducibility across trials, may contain some task-related inherent noise that is still trial-reproducible. Approach. To address this problem, this study proposed a similarity-constrained TRCA (scTRCA) algorithm to remove the task-related noise and extract TRCs maximally correlated with SSVEPs for enhancing SSVEP detection. Similarity constraints, which were created by introducing covariance matrices between EEG training data and an artificial SSVEP template, were added to the objective function of TRCA. Therefore, a better spatial filter was obtained by maximizing not only the reproducibility across trials but also the similarity between TRCs and SSVEPs. The proposed scTRCA was compared with TRCA, multi-stimulus TRCA, and sine–cosine reference signal based on two public datasets. Main results. The performance of TRCA in target identification of SSVEPs is improved by introducing similarity constraints. The proposed scTRCA significantly outperformed the other three methods, and the improvement was more significant especially with insufficient training data. Significance. The proposed scTRCA algorithm is promising for enhancing SSVEP detection considering its better performance and robustness against insufficient calibration.
Extreme value theory and the St. Petersburg paradox in the failure statistics of wires
Authors: Taloni Alessandro , Zapperi Stefano
Published: May 2021

The fracture stress of materials typically depends on the sample size and is traditionally explained in terms of extreme value statistics. A recent work reported results on the carrying capacity of long polyamide and polyester wires and interpret the results in terms of a probabilistic argument known as the St. Petersburg paradox. Here, we show that the same results can be better explained in terms of extreme value statistics. We also discuss the relevance of rate dependent effects.
Front-end electronics for CMS iRPC detectors
Authors: Shchablo K. , Samalan A. , Tytgat M. , Zaganidis N. , Alves G.A. , Marujo F. , Torres Da Silva De Araujo F. , Da Costa E.M. , De Jesus Damiao D. , Nogima H. , Santoro A. , Fonseca De Souza S. , Aleksandrov A. , Hadjiiska R. , Iaydjiev P. , Rodozov M. , Shopova M. , Sultanov G. , Bonchev M. , Dimitrov A. , Litov L. , Pavlov B. , Petkov P. , Petrov A. , Qian S.J. , Bernal C. , Cabrera A. , Fraga J. , Sarkar A. , Elsayed S. , Assran Y. , El Sawy M. , Mahmoud M.A. , Mohammed Y. , Chen X. , Combaret C. , Gouzevitch M. , Grenier G. , Laktineh I. , Mirabito L. , Bagaturia I. , Lomidze D. , Lomidze I. , Bhatnagar V. , Gupta R. , Kumari P. , Singh J. , Amoozegar V. , Boghrati B. , Ebraimi M. , Ghasemi R. , Mohammadi Najafabadi M. , Zareian E. , Abbrescia M. , Aly R. , Elmetenawee W. , De Filippis N. , Gelmi A. , Iaselli G. , Leszki S. , Loddo F. , Margjeka I. , Pugliese G. , Ramos D. , Benussi L. , Bianco S. , Piccolo D. , Buontempo S. , Di Crescenzo A. , Fienga F. , De Lellis G. , Lista L. , Meola S. , Paolucci P. , Braghieri A. , Salvini P. , Montagna P. , Riccardi C. , Vitulo P. , Francois B. , Kim T.J. , Park J. , Choi S.Y. , Hong B. , Lee K.S. , Goh J. , Lee H. , Eysermans J. , Uribe Estrada C. , Pedraza I. , Castilla-Valdez H. , Sanchez-Hernandez A. , Mondragon Herrera C.A. , Perez Navarro D.A. , Ayala Sanchez G.A. , Carrillo S. , Vazquez E. , Radi A. , Ahmad A. , Asghar I. , Hoorani H. , Muhammad S. , Shah M.A. , Crotty I.
Published: May 2021

A new generation of resistive plate chambers, capable of withstanding high particle fluxes (up to 2000 Hz · cm-2) and instrumented with precise timing readout electronics is proposed to equip two of the four high pseudorapidity stations of the CMS muon system. Double-gap RPC detectors, with each gap made of two 1.4 mm High Pressure Laminate electrodes and separated by a gas gap of the same thickness, are proposed. The new layout reduces the amount of the avalanche charge produced by the passage of a charged particle through the detector. This improves the RPC rate capability by reducing the needed time to collect this charge. To keep the RPC efficiency high, a sensitive, low-noise and high time resolution front-end electronics is needed to cope with the lower charge signal of the new RPC. An ASIC called PETIROC that has all these characteristics has been selected to read out the strips of new chambers. Thin (0.6 mm) printed circuit board, 160 cm long, equipped with pickup strips of 0.75 cm average pitch, will be inserted between the two new RPC's gaps. The strips will be read out from both ends, and the arrival time difference of the two ends will be used to determine the hit position along the strip. Results from the improved RPC equipped with the new readout system and exposed to cosmic muons in the high irradiation environment at CERN GIF++ facility are presented in this work.
Beyond 4D tracking: using cluster shapes for track seeding
Authors: Fox P.J. , Huang S. , Isaacson J. , Ju X. , Nachman B.
Published: May 2021

Tracking is one of the most time consuming aspects of event
reconstruction at the Large Hadron Collider (LHC) and its
high-luminosity upgrade (HL-LHC). Innovative detector
technologies extend tracking to four-dimensions by including timing
in the pattern recognition and parameter estimation. However,
present and future hardware already have additional information that
is largely unused by existing track seeding algorithms. The shape
of pixel-clusters provides an additional dimension for track seeding
that can significantly reduce the combinatorial challenge of track
finding. We use neural networks to show that cluster shapes can
reduce significantly the rate of fake combinatorical backgrounds
while preserving a high efficiency. We demonstrate this using the
information in cluster singlets, doublets and triplets. Numerical
results are presented with simulations from the TrackML challenge.
Quantum control landscape for ultrafast generation of single-qubit phase shift quantum gates
Authors: Volkov Boris O , Morzhin Oleg V , Pechen Alexander N
Published: May 2021

Mathematical analysis of quantum control landscapes, which aims to prove either absence or existence of traps for quantum control objective functionals, is an important topic in quantum control. In this work, we provide a rigorous analysis of quantum control landscapes for ultrafast generation of single-qubit quantum gates and show, combining analytical methods based on a sophisticated analysis of spectrum of the Hessian, and numerical optimization methods such as gradient ascent pulse engineering, differential evolution, and dual annealing, that control landscape for ultrafast generation of phase shift gates is free of traps.
Forming Strategy of Innovative and Technology Development for Manufacturing Facility
Authors: Zharov V S
Published: May 2021

It is demonstrated that technology upgrade at the existing manufacturing facilities can provide a simultaneous growth in the indicators of material productivity, capital productivity ratio and labor efficiency only under certain conditions. One can fulfill these conditions using the investment and innovative economic analysis of the production system activity. The authors formulate its nature and suggest a mechanism of its application for forming a strategy of innovative and technology development for a manufacturing facility. Note that any new technology for product release, introduced into the production process, should provide for the reaching the set target values of material and capital productivity, which should be taken into account during the development of the business-plan of the investment project on the introduction of technological innovations. A correspondingly developed procedure for estimating whether it is possible to reach the set target values is based on the calculation of a necessary volume of investments and reaching the financial sustainability by the companies. To compare possible options of the technological production upgrade and select the best one, the authors suggest a mechanism of “building” the values for the components of future company expenses and the calculation of the expected profit for each technological development scenario. This will also allow maximizing a future cost of the companies.
Improving the potential of Laku Pandai (Branchless Banking) to develop sustainable financial inclusion
Authors: Kesa Deni Danial
Published: May 2021

The fund management and investment campaign will become a moral hazard to educational institutions as a center of knowledge and culture if it does not involve the community. Using the Smart Behavior Social Intervention Method in Taruma Jaya Village, Kertasari, Bandung Regency, socialize the skills development pattern and identify Laku Pandai’s banking partners’ income sources. This paper aims to increase product diversification in Laku Pandai associated with the potential for sustainable financial inclusion in the village of Taruma Jaya. Innovation and product alignment with 109 respondents collected and filled out questionnaires consists of the university, industry, government relations, innovation and production processes. The mechanism of interaction between Laku Pandai and the five variables has had a positive impact on the improvement of output at a significant level of 0.05 and the university has the lowest significance compared with other variables. The results show the potential benefits for Laku Pandai when collaboration can boost their products’ performance and enable people around Citarum, in particular Kilometer 0 Area, to find job diversification initiated from support for branchless banking to start up business with access to finance.
Towards an eco-industrial development in West Papua economy
Authors: Wurarah Rully N , Karuniasa Mahawan , Wehantouw Frenly , Tuharea Abdullah , Muhsin Muhammad
Published: May 2021

West Papua province holds a crucial role to ensure the NDC target could be achieved in a measurable and timely manner. Despite its rich possession of pristine biodiversity, manufacture industry contributes 3% of the total provincial income. This study aims to predict the GRDP if West Papua incorporates Eco-Industrial Development (EID) to mitigate emissions from the industrial sector and its shares to the local community’s economy and the global economy. System dynamic modelling was employed to simulate and project the scenarios. The results show that the GRDP projection under the BAU scenario will rise from about 1,200 billion IDR in 2010 to 2,500 billion IDR in 2030, in parallel with the gradual increase of GHGs emission to 72,000 tonCO2e. The intervention scenario shows that the emissions will reach 57,000 tonCO2e and the economic contraction to 2,000 billion IDR by 2030. Considering the intermediate input, the added benefit for local communities in 2030 could fall from 840 billion IDR to 670 billion IDR in the intervention scenario. The contribution to the outer region’s economy could decrease from 230 to 180 billion IDR. Besides the benefit of EID to reduce emissions, the government should also consider the impact of economic contraction.
Palm oil-based biofuels and sustainability In Indonesia: assess social, environmental and economic aspects
Authors: Yasinta Tiara , Karuniasa Mahawan
Published: May 2021

Palm oil as an agricultural commodity plays an important role in the development of the Indonesian economy, considering it in producing vegetable oil. Policies for developing new and renewable energy in Indonesia aims to encourage the optimization of the use of biofuels from oil palm. This policy still raises pros and cons, so that analysis needs to be carried out through an environmental science perspective. This study aims to assess the sustainability of palm oil (CPO) as a basic material for making biodiesel from environmental, social, and economic aspects, as well as to provide recommendations on a sustainable palm oil biodiesel policy strategy. The method used is a qualitative analysis. Descriptive analysis of supporting literature is used to assess environmental, social, and economic aspects of palm oil-based biodiesel sustainability in Indonesia. The use of biodiesel in the country is expected to be sustainable in line with the stipulation of the mandatory biodiesel of 30 percent (B30) in 2019 by the Government as a substitute for fuel mixture. It was found that there are advantages to using palm oil-based biodiesel compared to other vegetable oils. Palm oil-based biodiesel can be produced in a sustainable manner.
Design and performance evaluation of edible film printing machine based on automatic casting knife
Authors: Putranto A W , Sakhbani M M , Khoir N H , Mutiarani N , Susilo B , Hermanto M B
Published: May 2021

The development of edible films has been widely applied in recent years as an environmentally friendly food packaging, increasing shelf life and improving food quality. The most commonly used technique for producing starch-based films was classical casting, leading to film thickness measurement difficult. Therefore, this study aimed to design an edible film printing machine based on an automatic casting knife. The method used in this research was the engineering method. The edible printing machine was designed for a laboratory scale with a 1200 mm length, 500 mm width and 300 mm height. There were three main parts, namely an automatic casting knife, automatic pouring and control box. The performance evaluation showed that the automatic casting knife could be printing an edible film thickness between 0-20 mm with an accuracy level of 99.3%. An edible film with a length of 200 mm and 130 mm width can be printed in a shorter time (10 seconds). The edible film also has a smoother appearance on microscopic observation and was preferred by panellists to its appearance, texture and transparency parameters compared with edible film from manual casting. Based on the performance evaluation results that promise to be more efficient in printing edible film, this machine was expected to be scaled up and become a solution for the realization of Indonesian green packaging in the industrial revolution 4.0.
Performance of the solar distillation pyramid type to desalinate seawater into freshwater
Authors: Damayanti R , Djojowasito G , Dharmawan F A
Published: May 2021

The solution of drinking water for coastal communities is to desalinate seawater into freshwater through implementation of the solar distillation pyramid type’s technology. This technology utilizes solar thermal energy (greenhouse effect) to speed up the condensation process by watering the roof. This research aimed to determine the solar desalination pyramid type’s performance and determine the effect of flushing treatment on solar distillation. Seawater about 4000 mL was put into a seawater container of the solar distillation pyramid type. The heating process would be carried out by sunlight, which causes seawater to be evaporated on the roof. Flushing treatment was given on the wall to accelerate the condensation process, so the temperature differences between the ambient and the solar distillation pyramid were obtained. The water vapor will turn into water and drip on the glass room walls, thus stream down through waterways and reservoirs. The research results that the energy efficiency of the solar distillation about 52.93% and obtains fresh water about 2317 mL for three days of observation. Freshwater quality from the desalination process fulfills the Indonesian Standard (SNI) 01-3553-20215 of drinking water, with a salinity of 0%, pH of 6.5, EC of 8 μS/cm, and TDS of 9 mg/L. The efficiency of solar distillation pyramid type is about 52.93%. This technology is a widely feasible solution for coastal communities because it is straightforward to construct and achieves higher reliability and cost minimization.
Drying cabya (Piper retrofractum Vahl.) at three ripeness stages
Authors: Hawa L C , Sugesti A , Laily A N , Yosika N I W , Wibisono Y , Sutan S M
Published: May 2021

Cabya (Piper retrofractum Vahl.) is a herbal plant that is widely used as an androgenic, antioxidant, and anticancer agent. Preservation of cabya in dry form is mostly carried out in red-colour only, while green-colour and orange-colour are rarely preserved by this method. The present study aimed to analyze the water content and the drying rate of three different stages of ripeness of cabya, indicated by the colour such as green, orange and red, and to analyze the piperine, antioxidant, and reducing sugar after drying. Drying was conducted by hot air drying method at 70°C for 18 hours. Reducing sugar content was analyzed based on the Somogyi-Nelson method, antioxidant content was analyzed using 1,1-diphenyl-2-picrylhydrazyl (DPPH) method, and piperine was analyzed based on SNI 005:2013 method. The results showed that the water content after the drying process of green, orange, and red cabya were 1.89, 4.53, and 7.55% after 8.5, 7.5, and 7 hours of processing, respectively. Antioxidant and piperine contents of green, orange, and red cabya were 87.15, 75.26, and 63.38 mg/ml; and 2.42, 1.97 and 1.54 %, respectively. Dried red cabya is containing the highest water content, fastest drying rate, highest reducing sugar, while piperine and antioxidant content are lower than green and orange cabya.
Mobile mecavision: automatic plant monitoring system as a precision agriculture solution in plant factories
Authors: Wijanarko A , Nugroho A P , Kusumastuti A I , Dzaky M A F , Masithoh R E , Sutiarso L , Okayasu T
Published: May 2021

Precision agriculture (PA) is an approach in farming systems based on information and technology to enhance agricultural production. PA is applied in plant factories to produce high-quality vegetables in a controlled environment by implementing an automatic crop growth monitoring system. Optimization of the observation process carried out with computer system techniques used in the monitoring process and assessment of the plant condition. Individual observation of cultivated plants requires a monitoring system and numerous equipment. Therefore, a monitoring system equipped with a mobile mechanism is needed to support the monitoring process of crops individually by a single observer. The objective of this study was to design and implement an automatic plant monitoring system based on mobile mechanisms and computer vision using simple equipment in plant factories. The Mobile Mecavision, a monitoring system consists of a mobility system and an image acquisition system controlled by Raspberry Pi. The components are A4988, NEMA 17, and Logitech C270 HD Webcam. The evaluation for system performance carried out using the extreme point shift system and t-test. The aspect of image functionality evaluated using the Structural Similarity Measure test and the result was obtained an image similarity value of 89% to 92% with a 90% level of confidence. The result of the performance test on the mobility aspect obtained that the system shifted numerically but not statistically. The overall performance of the system indicated that the monitoring system could be applied to monitor the crop growth in plant factories.
The impact of customer pressure and the environmental regulation on green innovation performance
Authors: Lestari E R , Dania W A P , Indriani C , Firdausyi I A
Published: May 2021

In recentyears, global climate change and environmental issues have become the serious attention of many parties. This is due to the growing awareness of customers, government and communities as the parties who are related to degradation of natural resources and environmental pollution matters. Firms encounter various external pressures, including consumer pressure and environmental regulation, so that they have to implement some environmentally friendly practices to achieve sustainable development, such as green innovation. The purpose of this study is to examine the impact of consumer pressure on green innovation performance and the role of moderating environmental regulation in this relationship. The conceptual model was verified using partial least square (PLS). Data was obtained from 80 food sector SMEs in Batu, East Java-Indonesia. The results show that customer pressure has a significant positive effect on green innovation performance. Likewise, environmental regulations have a significant positive effect on the relationship between customer pressure and green innovation performance. These results offer important implications on how the companies are more concerned about improving green innovation.
Quality control analysis for minimize of defect in potato chips production using six sigma DMAIC
Authors: Mustaniroh S A , Widyanantyas B A , Kamal M A
Published: May 2021

SMEs (Small Medium Entreprises) Rama is one of the potato chip producers in Batu city with the brand named “Rama Djaya”. To produce competitive products, SMEs must continue to improve the quality of products by minimizing defects in the production. The defects in the quality of potato chips occur in color, crunchy and size. The purpose of this research is to identify and analyze the factors that can cause defects in potato chips. The research method used is Six Sigma DMAIC (Define, Measure, Improve, Analyze, and Control). The results showed that for the defined stage, the main priority for quality improvement using the CTQ (Critical To Quality) was color change by 92%. In the measurement stage, the value of process capability produced the final yield of 51.69% which showed a lower percentage compared to the Indonesian National Standard of 69.2%. The analysis result of DPMO (Defect Per Million Opportunity) value was 483,091.79, equal to 1.54 sigma so it needed to improve its strategy in production.
Development model on upstream-downstream integration of coffee agroindustry using dynamics modelling approach
Authors: Santoso I , Afifa YN , Astuti R , Deoranto P
Published: May 2021

Increasing the competitiveness of the coffee agro-industry requires integration from upstream to downstream. The problems faced by Lumajang coffee farmers are in increasing production; the limited coffee supply is not proportional to the high demand. Besides, the quality of the coffee produced is good but has not been processed properly. This research is expected to improve the performance of the coffee agroindustry in the Lumajang Regency and strengthen the institutional integration of the upstream-downstream coffee agroindustry in Lumajang. The dynamic system methodology is considered to be able to solve existing problems; the ability of dynamic systems to recognize variables and to show the influence of the relationship between the overall system behaviour in a model. The results obtained are conceptual models Causal Loop Diagram (CLD) as an effort to solve problems. It is made based on key variables to build the right dynamic system. The CLD model of upstream and downstream coffee agroindustry integration in the Lumajang Regency consists of 3 sub-models, namely the sub-model of production, quality, and agroindustry institutions.
Green marketing mix: an example of its influences on purchasing decision
Authors: Astuti R , Deoranto P , Wicaksono M L A , Nazzal A
Published: May 2021

The awareness of consumers about environment has been increasing considerably. The green marketing mix is one of strategies for producers to meet the need of consumers. This study aimed to develop a theoretical structural model representing the influences of green marketing mix on purchasing decision. The conceptual framework was empirically tested using Partial Least Square (PLS) method based on a survey of 42 consumers of mozzarella cheese produced by CV. Brawijaya Dairy Industry (BRADY) in Malang City, Indonesia. Data were collected using questionnaires given to respondents who were taken by purposive sampling. Exogenous latent variables in this study were green product, green price, green place, and green promotion as variables of green marketing mix, meanwhile endogenous latent variable was purchasing decision. The results showed that green product, green price, and green promotion influenced significantly purchasing decision. Green place did not influence significantly on purchasing decisions because the consumers, who were mostly snack producers, did not consider the distance of the marketplace. They usually bought BRADY mozzarella cheese with other ingredients for snack production. They saved more energy by buying BRADY mozzarella cheese at one-stop-shop of ingredients for snack production although it was sold at a little bit far marketplace. The most influential variable of green marketing mix on purchasing decision of BRADY mozzarella cheese was a green product because the ingredients of the product were toxic-free.
Natural biopesticide from liquid rice hull smoke to control brown planthopper
Authors: Hernani  , Yuliani S , Rahmini
Published: May 2021

Liquid smoke from rice hull has the potential to be developed as a natural pesticide, because of its contents of chemical compounds which is good for controlling insects. The purpose of this research was to find out the best formula from liquid rice hull smoke to control brown planthopper. The methodology used through several stages of activities, namely (1) purification of liquid smoke, (2) formulation of natural pesticide with liquid smoke as active compound, synergistic, adjuvant, and solvent; (3) toxicity of formula and (4) bioassay tested of formula to brown planthopper in the laboratory. The formulation was arranged completely randomized design with three replications. The results showed that 7 formulas of natural pesticide based on liquid rice hull smoke were highly effective to control brown planthopper assessed by mortality test. Furthermore, the toxicity test on those formulas has toxicity (LD50) ranging from 128 to 725 ppm. All formulas are still categorized as toxic and can use as a pesticide. Mortality test results with 3 variations of concentration, i.e., 40%, 30% and 10 % showed that the best results were in a concentration of 10%. In this case, for 7 days observations, pesticides with a formula of F1, F2 and F3 killed more than 90% of brown planthopper.
Formation and development of flavour of cocoa (Theobroma cacao L.) cultivar Criollo and Forastero: a review
Authors: Wahyuni N L , Sunarharum W B , Muhammad D R A , Saputro A D
Published: May 2021

Cocoa (Theobroma cacao L.) tree grown in tropical places, particularly in Africa, Asia, and South America. Cocoa beans is a fundamental ingredient in chocolate manufacturing. There are four cultivars namely Criollo, Forastero, Trinitario, and Nacional, which are commercially grown worldwide. Criollo and Forastero are the most intense cultivar used for making cocoa-based products. The Criollo is known as “fine” flavour cocoa yet has the lowest production, while Forastero as “bulk” cocoa has the highest contribution to the cocoa market in the world. Criollo has the complexity of aromatic components that may enhance fruity, flowery, herbal, woody, nutty and caramel aroma, and thus creating unique pleasant flavours. Compared to Criollo, Forastero offers a basic or ordinary flavour despite its highest productivity. Flavour as a sensory attribute of chocolate had a great contribution to consumer acceptance and market demand. The distinctive flavour of the final cocoa/chocolate products are influenced by several factors from farm to bar such as the cocoa cultivars, post-harvest treatment and processing techniques. Those factors changes the internal quality of cocoa beans, most importantly the flavour precursors or chemical compounds important to cocoa flavour. The aim of this review is to provide information on the formation and development of cocoa flavour during processing.
Antioxidant analysis of Artocarpus heterophyllus drink
Authors: Devi M , Sunaryo NA , Mansoor AH
Published: May 2021

Jackfruit leaves herbal drink is a functional beverage that contains a high antioxidant value. The addition of cinnamon and clove could improve the colour and aroma of jackfruit leaves herbal drink. The utilization of jackfruit leaves in herbal tea product is helpful to upgrade the usability of jackfruit leaves. This research aims to know the antioxidant capacity and antioxidant content (phenolics, flavonoids, tannins, saponins, gallic acid, kaempferol and quercetin) from 0.50%, 1% and 1.50% of jackfruit leaves. Herbal drink with the lowest hedonic score is 1 and the highest is 5. This research is including experiment research using Completely Random Design (CRD) with three kinds of treatment. The analyzed data using One Way ANOVA, if the treatments show a significant difference, then the analyzed data should be proceeded by Duncans Multiple Range Test with 5% confidence interval. The result is, the highest value of antioxidant capacity content (80.00 ppm), phenolics antioxidant (411.90 mg/l), flavonoids antioxidant (321.84 mg/l), tannin antioxidant (30.28 mg/l) saponin antioxidant (1.00 mg/l), gallic acid antioxidant (75.25 microgram/g), kaempferol antioxidant (22.38 microgram/g), quercetin antioxidant (32.33 microgram/g) in 1,5%Artocarpus heterophyllusdrink. Base on the result, it can be concluded that the jackfruit leaves herbal drink product proven as a functional drink which contains a high antioxidant value.