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3061 articles
Proceedings Article

Titanium Dioxide Soaking Time Effects on DSSC Powers and Efficiency

Rika Musiana, Abu Hasan, RD Kusumanto
The purpose of this study was to study the power and efficiency of Dye Sensitized Solar Cell (DSSC) using extracts of yellow sweet potato (Ipomoea batatas L.) with variations in the soaking time of Titanium Dioxide paste (TiO2) in dye and light intensity. This research used descriptive method with several...
Proceedings Article

Biochemical Changes of Liver and KidneyAfter Bone Graft Implant from Black Devil Snail (Faunus ater) Shell Material

Erwin Erwin, T. Fadrial Karmil, Teuku Zahrial Helmi, Nuzul Asmilia, Muhammad Isa, Wahyu Eka Sari, Budianto Panjaitan, Sugito, Hathalia Y. Utari, Azzalia N. Diva, Astri Wulandari
Biochemical changes in blood can be used as an indicator in liver and kidney disorder. This study aims to discover the changes of serum glutamic oxaloacetic transaminase (SGOT), serum glutamic pyruvic transaminase (SGPT), creatinine and blood urea nitrogen (BUN) levels after the implant of black devil...

Children Under Multidimensional Poverty Trap (Exploring the Priority Dimension to Achieve SDGs’ Target Post Covid-19 Disruption)

Agnes Pratiwi Boru Ginting, Omas Bulan Samosir
The Covid-19 pandemic has disrupted various aspects of life and left major challenges to achieve the TPB/SDGs. Especially, in reducing child poverty. This study aims to study child poverty in DKI Jakarta Province by estimating poverty in monetary and multidimensional terms in pre and post the Covid-19...
Proceedings Article

Temporal and Spatial Trends of Spring Maize Irrigation Water Requirement in Northeast China in Recent 60 Years

Zongyue Ren, Xiaojing Liu
In this paper, the daily meteorological data of 78 stations in Northeast China from 1958 to 2017 were used to calculate the evapotranspiration and water requirement during the growth period of spring maize. Combined with M-K trend test and GIS spatial analysis technology, the spatial and temporal trends...
Proceedings Article

Financial Assessment and The Impact of Government Incentives on Contract Broiler Farming in Peninsular Malaysia

Zineb Abdulaker Benalywa, Mohamed Mansor Ismail, Mad Nasir Shamsudin, Zulkornain Yusop
The broiler industry in Peninsular Malaysia has undertaken significant structural changes; mainly there has been a gradual move towards contract farming with an increasing number of broiler farmers working under contract arrangements for commercial firms and integrators. DVS indicated that the broiler...
Proceedings Article

On extension of fuzzy measures to aggregation functions

Anna Kolesárová, Andrea Stupnanová, Juliana Beganová
In the paper we study a method extending fuzzy measures on the set N = {1, . . ., n} to n-ary aggregation functions on the interval [0, 1]. The method is based on a fixed suitable n-ary aggregation function and the Möbius transform of the considered fuzzy measure. This approach generalizes the wellknown...
Proceedings Article

Study Of Recalcitrant Behaviour OfArthocarpus integer

Esty Puri Utami, Abubakar Ibrahim, Evayusvita Rustam
Arthocarpus integer or cempedak is an indigenous fruit with a distinctive taste and smell. Cutting seeds on water content observations need to be considered because the seeds contain sap that can affect the observation results. A. integer seeds are classified as recalcitrant seeds, so the handlers must...
Proceedings Article

Storage requirments in urban energy systems for the integration of rooftop photovoltaics

Marlon Schlemminger, Dennis Bredemeier, Alexander Mahner, Raphael Niepelt, Michael H. Breitner, Rolf Brendel
Solar photovoltaics (PV) on building rooftops is a major contributor to the decarbonization of energy systems and provides electricity close to consumption. However, high shares of PV challenge distribution grids and require energy storages due to the fluctuating daily and seasonal production profile....
Proceedings Article

Measuring the level of student satisfaction in the open final exam system using correlation analysis

Hero Wintolo, Haruno Sajati, Dedi Bintang Pamungkas, Astika Ayuningtyas, Asih Pujiastuti, Anggraini Kusumaningrum
The management of student final assignments must change along with the outbreak of the covid19 virus and causing the pandemic so that online-based learning is implemented. This research was carried out to produce software using MVC Framework for managing student final assignments, starting from proposal...

The Initial-Boundary Value Poblem for the Korteweg-de Vries Equation on the Positive Quarter-Plane

Pham Loi Vu
Pages: 28 - 43
The paper deals with a problem of developing an inverse-scattering transform for solving the initial-boundary value problem (IBVP) for the Korteweg-de Vries equation on the positive quarter-plane: pt - 6ppx + pxxx = 0, x 0, t 0, (a) with the given initial and boundary conditions: p(x, 0) = p(x), p(x)...
Proceedings Article

Potency of Sugarcane Bagasse Ash Partial Subtitution of Cement in Concrete

Erniati Bachtiar, Darwan, Ismail Marzuki, Asri Mulya Setiawan, Andi Ibrahim Yunus, Sri Gusty
The availability of sugarcane bagasse ash produced by Arasoe Sugar Factory, it is not used utilized. That sugarcane bagasse ash has size very fine that it can pollute the air. The sugarcane bagasse ash has silicate content, and it has pozzolan properties. The needs of construction material are something...
Research Article

Aortic root calcification and cardiac risk factors in patients with coronary calcium score greater than zero using multidetector computed tomography

Hasan A. Al-Nafakh, Hussein Nafakhi, Mohammed Abd Kadhim Al-Jiboori, Abdulameer A. Al-Mosawi, Raad H. Tawfeq
Pages: 27 - 31
Background: Vascular calcification is a marker of atherosclerotic burden and is associated with increased risk of cardiac events. The aim of this study was to investigate the relationship between clinical cardiac risk factors and aortic root calcification (ARC) in patients with a coronary calcium score...

Digital Monitoring Experience in Digital Media and the Internet

Annisa Reginasari, Tina Afiatin, Bhina Patria, Kokom Komariah
Nowadays, parents face the challenge related to social media use problems of their children, as the internet and related technology is more advance than previous days. Nevertheless, the young generation is enthusiastic about digital technology. The paradox of internet use in young and older generations...
Proceedings Article

Physical Evaluation of Orange Peel (Citrus Sinensis) Aromatherapy Balm

Cory Linda Futri Harahap, Ayus Diningsih, Ervina Silvia
Orange peel has beneficial contents. One is essential oil which can be used as medicinal raw and aromatherapy. Orange aromatherapy can stabilize the nervous system and lead to pleased feeling. This study aimed to evaluate the physical preparation of orange peel aromatherapy balm. The research method...

SLCH: A Novel Customer Satisfaction Scoring

Muhammad Imanullah, Eka Sahputra
People are using customer satisfaction scores as consideration to set new goals and grow their business. In customers’ sight, a satisfaction score can be seen as a reasonable rating that shows how good the business quality is. They prefer businesses with high ratings over others. Customer satisfaction...
Proceedings Article

Analysis of the Effect of Gothic Vortex Generator Using Computational Fluid Dynamic on Naca 2412

Zidhane Aliffaputra Nuranto, Setyo Hariyadi Suranto Putro, Nyaris Pambudiyatno
A vortex generator is a small component that has shaped as a fin and located on upper the surface of the wing or stabilizer to do modification the airflow around the wing surface that affects the boundary layer. In this research, analysis of the aerodynamic characteristic has been done by using computational...

Discriminant Analysis of Insurance Companies in Indonesia

Bagoes Harsono, Imo Gandakusuma
This study aims to identify a financial distress condition for insurance companies using existing methods such as the Altman Z-score and Ohlson O-score and also approach a new discriminant model using the data from 2017 to 2021. In order to improve the quality of estimation and forecasting of the financial...
Proceedings Article

Thermodynamic Analysis of Organic Rankine Cycle for Waste Heat Recovery at Sorong Power Plant

Fefria Tanbar, Aswan Haykal Adam Wardana Porosi, Ahmad Ahda Rozaqi, Khasani Khasani, Hifni Mukhtar Ariyadi, Rafael Pungkas Panutun, Ariyana Dwiputra Nugraha, Handrea Bernando Tambunan, Achmad Nurfanani, Wigas Digwijaya, Zaenal Abidin, Basuki Sri Wantoro
Indonesia remains highly dependent on fossil fuels and non-renewable energy sources, which contribute to global warming. On the other hand, the country has yet to fully develop waste heat utilization, especially through organic Rankine cycle (ORC) systems, to help reduce reliance on fossil fuels. Take...

Hierarchy of Chaotic Maps with an Invariant Measure and their Compositions

M.A. Jafarizadeh, S. Behnia
Pages: 26 - 41
We give a hierarchy of many-parameter families of maps of the interval [0, 1] with an invariant measure and using the measure, we calculate Kolmogorov­Sinai entropy of these maps analytically. In contrary to the usual one-dimensional maps these maps do not possess period doubling or period-n-tupling...
Proceedings Article

Benzyl Amino Purine (BAP) Growth Regulator Application and Shoot Origin Stem Lai (Durio kutejensis) Against Growth Durian (Durio zibethinus Murr) Grafting Seedlings

Syamad Ramayana, Bambang Supriyanto, Widi Sunaryo, Susylowati Susylowati, Sabeth Adiastie
This study aims to determine the concentration of Benzyl Amino Purine (BAP) and the exact origin of scion shoots to optimize the growth of durian (Durio zibethinus Murr) grafting seedlings. This study was arranged in a completely randomized design (CRD) consisting of two factors with four replications....
Proceedings Article

Utilization of Bottom Ash and Sawdust Waste as a Substitute for Fine Aggregate in Concrete Mix

Kosim Kosim, Zainuddin Zainuddin, Raja Marpaung, Darma Prabudi
Concrete is a split mixture, sand, cement, water, and additives. The concrete to be designed is made of a mixture of cement with bottom ash + sawdust, split, sand, and water. The purpose of this study was to determine the effect of using bottom ash + sawdust and the ratio between bottom ash + sawdust...
Proceedings Article

Research into Genetic Problems of Powdery Mildew Resistance Gene in Tobacco

Yan Chen, Jiazhong Liu, Hongmei Li, Shuyingi Li
Objective: To study the genetic problems of powdery mildew resistance gene in tobacco. Method: after tobacco powdery mildew resistant variety and susceptible variety provided by a greenhouse during May 2015~ May 2016 were selected as the research object, to build a genetic model, genetic laws of resistance...
Proceedings Article

A Group of Criterions on National Economic Security with Pass-through Model

Zheng Wang, Min Hu
The fluctuation of foreign exchange rate has a fatal influence on one country’s domestic economy, foreign trade, and the relations between international economies. In this paper, I prove the Pass-through Model of Tange(1997) and propose a group of criterions of national economic security including the...
Proceedings Article

Fracture Surface Fractal Dimension and Its Relationship with the Impact Strength of the PP/Diatomite composites

Chen Liu, Chengbao Wu, Jing Wei, Zhenghua Chen
The surface of diatomite particles was treated by a silane coupling agent, and the diatomite filled polypropylene (PP) composites with a volume fraction range of the filler from 0 to 15% were prepared by means of melt blending in a twin-screw extruder. The impact strength of the composites was measured...

The Influence of Cultural Acculturation (Social, Customs and Arts) in the past on Palembang Songket Motifs

Desloehal Djumrianti, Andhika Fathan Abdillah, Lisnini Lisnini
The main purpose of this current study is to investigate the impact of acculturation of societies (social, traditions and expressions) in the past on Palembang Songket motifs. This is a quantitative study, where data was gathered through questionnaires and interviews. The study used a sample of 100 respondents...

Factors affecting company’s cash holding

Arif Herlambang, Werner R. Murhadi, Devia Cendrati
This study aims to analyze the factors affecting several companies’ cash holdings. Some of the factors were net working capital (NWC), cash flow, capital expenditure, leverage, and market-to-book. The samples used in this study were 318 non-financial companies listed in the IDX in 2013-2017. The approach...

The Hankel determinant associated with a singularly perturbed Laguerre unitary ensemble

Shulin Lyu, James Griffin, Yang Chen
Pages: 24 - 53
We are concerned with the probability that all the eigenvalues of a unitary ensemble with the weight function w(x,t)=xαe−x−tx, x ∈ [0, ∞), α > −1, t ≥ 0, are greater than s. This probability is expressed as the quotient of Dn(s, t) and its value at s = 0, where Dn(s, t) denotes the determinant of...
Proceedings Article

Translation-Invariant p-Adic Gibbs Measures for the Potts Model on the Cayley Tree of Order Four

Mohammad Azim Mohd Azahari, Mohd Ali Khameini Ahmad, Nor Muhainiah Mohd Ali
Different topological structure between real and p-adic fields provides a distinct condition for solution of equations or system of equations. For example, the equation $$x^{2} + 1 = 0$$ does not have solution over real field but it has solution over p-adic field for $$ p \equiv 1\left( {\bmod 4} \right)$$....
Proceedings Article

Lipase Production of Aspergillus aculeatus MS. 11 Using Solid State Fermentation on Rubber Seed Press Cake

Maya Nurjanah, Miftahul Ilmi
Lipase is an enzyme that has various use in industrial sector. However, the enzyme production cost is considerably high mainly due to expensive fermentation substrate. Therefore, it is necessary to develop effective media formulation to increase production of lipase enzyme without reducing the amount...

Sustainable Jack Bean (Canavalia ensiformis (L.) DC.) Production through Cocoa Pod Biochar and Effective Microorganism Ratios

Zubaidah Yusop, Sharifah Mazenah Wan Yusuf, Abdul Rahman Saili, Siti Sahmsiah Sahmat, Mohamad Zulfikar Kamil, Ahmad Shahir Abd Aziz, Rosalina Yuliana Ayen, Adriene Geoffery, Rickson Isugian, Shreenica Suliman
Agriculture plays a dual role in climate change, acting both as a source and a potential sink for greenhouse gas emissions. Achieving net zero emissions requires innovative farming practices that not only sustain crop productivity but also enhance carbon sequestration. This study investigates the effects...
Proceedings Article

Research of Situ Strain of Measuring Flexible Truss Deformation Based on Fuzzy Network Method

Yong Zhao, Hong Bao, Xuechao Duan, Hongmei Fang
An adaptive fuzzy network method is proposed for measuring flexible truss deformation by using situ strain in this paper. The relation matrix between strain and arbitrary deformation nodes of truss is first derived by using inverse finite element method. Based on the elements of matrix, strain measuring...
Proceedings Article

Effectiveness of Mirror Therapy for Muscle Strength in Ischemic Stroke Patients with Hemiparesis

Yudisa Diaz Lutfi Sandi, Dedi Irawandi, Sandi Alfa, Muhammad Abd. Sayuti
Stroke is clinical symptoms which disturbances in blood circulation to the brain caused either local or global malfunctioning that occurs suddenly and rapidly progressive that usually caused hemiparesis in stroke patients. Late and inappropriate exercises management may cause permanent disability. The...
Proceedings Article

Optimization on Checkpoint based on Petri Net

Decheng Liu, Haoming Guo
This paper focus on searching the bottleneck in the security checkpoint to meet the trade-off between the security and convenience. we allocate certain time to each step which meet the duration of Poisson distribution. Then, with the airport security model based on Petri net, the whole process is simulated...

Completely Prime Modules Over Path Algebras for Dynkin Quiver of Type An and Dn

Risnawita, Irawati, I. Muchtadi-Alamsyah
Let K be a field and Q be a quiver (directed graph), and let A = KQ be the path algebra that corresponds to Q with coefficients in K. An A-module M is a completely prime (c-prime) module in the sense that rm = 0 for one m ∈ M and r ∈ A implies that either r annihilates all M or m = 0. In this paper,...
Proceedings Article

Review on Predictive Analysis of Placement of Students Using Machine Learning Algorithms

Vinod S. Agrawal, Sarika Shelke Kadam
Machine learning is an emerging trend which has proven to learn automatically from past data. Machine learning can be performed using various ways like supervised, unsupervised, reinforcement learning. Machine learning where system computer system learning from the data set available. Machine learning...
Proceedings Article

Addition of Trehalose of Duck Egg Yolk-Tris as an Extender Medium on Buffalo Frozen Semen

Tinda Afriani, Yolanda Marta Pela, Jaswandi, Elly Roza, Adisti Rastosari, Anna Farhana
This study aimed to determine the effect of adding trehalose of duck egg yolk-tris extender medium on the quality of frozen semen at buffalo. The design used was experimental a Randomized Block Design (RBD) method with 4 treatments and 4 replications as a group. The addition of trehalose (T) with several...
Proceedings Article

Effects of Playing with Gadgets on Elementary School Children in Urban and Rural Environment

Ariani Ariani
The existence of gadget is like the two sides of a coin. On one side, it brings benefits to our life, but on the other side, it facilitates negative behaviour impacts to its users, and the patterns for rural children may be different than those of urban. Objective: This study aimed to investigate the...

Trend Learning Model Through Hybrid Learning

Umi Kulsum, Djoko Kustono, Purnomo Purnomo
The purpose of this research is to know the difference of Hybrid Learning result with learning result. The design of this study was Non-Equivalent Control Group Design, consisting of four treatment groups with varying proportions of hybrid learning, 50%, 60%, and 70%, respectively, and the other group...
Proceedings Article

Effect of Surface Roughness on the Determination of the Creep Properties of Material by Using Three Points Bending Creep Test

Shifeng Wen, Sibo Zhou, Xianglei Liu
The purpose of this paper is to understand the effect of surface roughness of the specimen on obtaining the creep characteristics by using bending creep tests. To this aim, a numerical study has been performed on the creep damage development of the specimen by implementing the different surface roughness...

Effect of Sales Growth and Asset Structure on Capital Structure in Real Estate and Property Companies on the Indonesia Stock Exchange

Haljeki Aulia, Lara Al Ashry, Halkadri Fitra
This study aims to analyze the effect of (1) sales growth and (2) asset structure on capital structure in real estate and property companies listed on the Indonesia Stock Exchange (IDX). This research is classified as causative research, using secondary data with a population of all real estate and property...

Exploring Parents' Experience in Guiding Their Children while Using Gadget at Home

Azka Nuhla, Sri Sularti Dewanti Handayani, Ali Formen, Yuli Kurniawati Sugiyo Pranoto
Nowadays, along with the rapid growth of the times, gadget becomes an inseparable tool from human life. The relationship between gadget and internet is like a unity which cannot be separated. It is easy to use because it can be accessed freely by anyone, including young children. However, the internet...

An Analysis of Factors Influencing the Income Level of Cattle Ranchers on Kabupaten Serdang Bedagai

Arwansyah, Eko Wahyu Nugrahadi, Muhammad Yusuf, Joko Suharianto
One of sectors present a main contribution improving district net income on Kabupaten Serdang Bedagai is on agricultural with husbandry sub-sector, which sub-sector has a closed chain from upstream to down compared to another sector. The objective of this study is to determine the value influence of...
Conference Abstract

P5.10 CHANGES IN MECHANICAL PROPERTIES OF FEMORAL ARTERY WALLS IN PIG MODEL OF ARTERIOSCLEROSIS

Robert Pasławski
Pages: 22 - 22
Arteriosclertic lesions leading to increased stiffnes of the walls. The goal of the research was to estimate changes in the mechanical properties of femoral artery in swine with experimentally induced arteriosclerotic changes by western type diet. Methods: 32 white female pigs (40 kg), were divided...
Proceedings Article

Utilization of Gaharu Leaf Ethanol Extract as an Anti-Acne Herbal Patch

Gayatri Simanullang, Untia Kartika Sari Ramadhani, Nisa Yulianti Suprahman, Gres Maretta, Dewi Rana Syafitri, Pinka Mustika Saeli, Tsalsha Ashafila
Acne is a skin disease characterized by the presence of lumps on the surface of the facial skin caused by the presence of bacteria. Gaharu leaves have secondary metabolites, such as flavonoids, which can be used as antibacteria. This research aims to formulate acne patches from gaharu leaves ethanol...

The Effectiveness of Advance Organizer Learning Approach in Teaching Reading Narrative Text for First Year High School Students

Awab Abdulloh, Rizman Usman
The purpose of this study is to determine the efficacy of the Advance Organizer Learning Approach in teaching first-year high school students to read narrative text. The study is set up as an experimental study, with the data collected via pretest and posttest while the training material is delivered...
Proceedings Article

Petri Nets based Reliability Evaluation of Services

Jiajun Xu, Shuzhen Yao
In this paper, a new method is proposed to measure the reliability of service composition. The service composition is related to structure and interaction associated. This paper first studies structure associated service composition description language BPEL; while to the service interaction, it models...
Proceedings Article

A Novel Contactless Rotary Position Micro-Sensing System Based on Electromagnetism

Bohan Lv, Guangshang Zeng, Shan Liu, Xiyan Qu
Based on the law of electromagnetic induction, a novel contactless absolute angular position micro-sensor has been designed in the literature. It is mainly composed of three parts: a magnet having two portions shaped as circle segments with different center points, a Hall effect sensor and a signal processing...
Proceedings Article

A Model for Micro-grid Short-term Load Forecasting Based on SR-LS-SVR

Yu-xian Zhang, Yu-bao Gao
Considering the impact of distributed power on the net load, the short-term load forecasting model established by SR-LS-SVR from the global perspective of the distribution network. The model parameters are quickly optimized by fine-grained parallel PSO. The accuracy, robustness and efficiency of the...

Technical and Economic Aspects on the Use of Herbal Medicine to Improve the Income of Broiler Poultry as Determining Success of Broiler Business

Adi Sutanto, Wahyu Widodo, Imbang Dwi Rahayu, Apriliana Devi Anggraini
Herbal products that have been considered safe for the health of livestock and humans are formulated in the form of herbal medicine. This research was conducted to investigate the technical aspects of production which include feed consumption, body weight, feed conversion, and efficiency, as well as...

The Risk of Lymphatic Filariasis Transmission in Belitung Regency After Elimination Program

Yahya, Tanwirotun Nimah, Reni Oktarina, Santoso
Belitung Regency has passsed Transmission Assessment Survey (TAS) in 2012, 2014, and 2016 respectively, which means that the Mass Drug Administration (MDA) in Belitung is being considered successful. This research has been conducted in February-November 2017, which aimed to analyze the program of filariasis...