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5337 articles
Proceedings Article

Productivity and Cost Analysis of Log Hauling Using Logging Trucks in Natural Forests in East Kalimantan, Indonesia

Diah Rakhmah Sari, Rivaldi Trisna Herlambang, Yosep Ruslim, Heru Herlambang
Log hauling is a critical and cost-intensive stage in timber harvesting operations. In Indonesia’s natural forests, log hauling is mechanized by using logging trucks to enhance efficiency and productivity. This study aimed to calculate the productivity, cost, and efficiency of log hauling in natural...
Proceedings Article

Effect of Ball Milling on the Electrochemical Properties of La0.7(Mg0.25Ti0.05)(Ni0.85Co0.15)3.5 Hydrogen Storage Alloy

Shujun Qiu, Xingyu Ma, Errui Wang, Jianling Huang, Hailiang Chu, Yongjin Zou, Cuili Xiang, Fen Xu, Lixian Sun
The influence of ball milling on the structure and the electrochemical properties of La0.7(Mg0.25Ti0.05)(Ni0.85Co0.15)3.5 hydrogen storage alloy was investigated systematically. The XRD results show that the main phases of the alloy are a (LaMg)Ni3 phase with the PuNi3-type rhombohedral structure and...
Research Article

Neonatal Mortality in a Tertiary Care Private Set Up in Saudi Arabia

Sajjad Ur Rahman, Muhammad Hasan Abdulghani, Khalid Al Faleh, Jasim Anabrees, Mohammad Khalil, Konstantinos Mousafeiris, Mustafa Mohammad Mustafa, Maha Yassin Mansour, Adnan Mirza, Mohammad Mubarak, Mohamed Kamal
Pages: 16 - 19
To ascertain Neonatal Mortality Rate (NMR), Early NMR (ENMR), Late NMR (LNMR), Corrected NMR (cNMR), and causes of neonatal mortality in a major tertiary care private maternity and Neonatal Intensive Care Unit (NICU) set up in Saudi Arabia. This was a retrospective analysis of hospital data. We ascertained...

The Effect of Reflective Journal Writing on Students’ Writing Ability of Narrative Text

Firdaus Habibi, Ismalianing Eviyuliwati, Sunardi Kartowisastro
This research is aimed to obtain the empirical evidence about the effect of reflective journal writing on students’ writing ability of narrative text at the tenth-grade students of SMA Triguna Utama South Tangerang. The writer used quasi-experimental research which classified into a quantitative research....
Research Article

Acute effect of coffee consumption on arterial stiffness, evaluated using an oscillometric method

Darío Echeverri, Alejandro Pizano, Félix R. Montes, Pedro Forcada
Pages: 16 - 32
Introduction: Previous studies show contradictory results related to the vascular effects of coffee; they suggest that caffeine increases arterial stiffness and negatively impacts vascular health, the aim of this study is to evaluate the acute coffee effects on the vascular stiffness. Methods and materials:...
Proceedings Article

Differences of Salivary Total Protein Levels in Plaque Induced Gingivitis and Healthy Patients in Periodontology Clinic of the Faculty of Dentistry USU Medan

Aini Hariyani Nasution, Anushkaa Ravi Balaan
Gingivitis is an inflammation of the gingiva due to an accumulation of bacterial plaque that can cause periodontal structural damage. In general, to diagnose gingivitis involves clinical measurements and radiographic assessment which are often poorly tolerated by the patients and are also subjected to...

The Impact of Teachers’ Guidance on Students’ Learning Motivation

Adiani Hulu
The study aims to find out the positive impact of teachers’ guidance on students’ learning motivation at SMPN-1 Sipoholon North Tapanuli district, North Sumatera Indonesia in academic year of 2018/2019. The method used in this study was descriptive quantitative and inferential method. Population is all...
Proceedings Article

Analysis of Stability of Sudan I-D5

Yin-ping CAI, Yue-yun Li, Meng WANG, Yu-xin Yu
The stable isotopic labeling reference materials play an indispensable role in the verification and calibration measuring instruments, evaluation analysis methods, determining the material characteristic and the quality control in the process of production. Therefore, it has great economic and social...
Research Article

The Incidence and Prognosis of ICU Delirium: A Retrospective Study from a Single Center

Qing Feng, Yuhang Ai, Meilin Ai, Li Huang, Qianyi Peng, Lina Zhang
Pages: 16 - 23
Purpose: Delirium is a frequent occurrence amongst Intensive Care Unit (ICU) patients, but studies on its causes are sparse and its risk factors vary from disease to disease. Here, in this study, an attempt was made to investigate the factors associated with the prognosis of delirium in the ICU. Methods:...

Development of Chinese Digital Teaching Material for 10th-Grade Topic Self-Introduction Based on Flipbook

Aiga Ventivani, Lukluk Ul, Octi Rjeky M., Dyna Mellania
This development research aims to develop Chinese digital teaching material for 10th-grade topic 个人 信息 [gèrén xìnxī] (self-introduction) based on flipbook. The research method in this development is the Research and Development (R & D) method using the DDD-E model. Following the development model...
Proceedings Article

The Correlation of HbA2 Levels Against The Mentzer Index in Patients Diagnosed with Thalassemia in A Private Laboratory Around Central Java

Sri Indah Kusumawati, Andri Sukeksi, Gela Setya Ayu Putri
Hemoglobin electrophoresis is the gold standard for thalassemia carriers screening. Hemoglobin electrophoresis sees an increase in HbA2, where thalassemia patients experience abnormalities in the composition of HbA2. The Mentzer index is a discrimination index formula with good sensitivity, specificity,...

Communication and Disclosure of Public Information in the Era of Digital Democracy in West Java Regional Government: Public Policy and Political Perspective

Tatang Sudrajat, Sandra Irawaty
.The implementation of regional government is greatly influenced by the massive development of communication and information technology. Communication between regional governments and the community and openness of public information are fundamental in local democracy. The flow of democratization has...

A Heat Transfer with a Source: the Complete Set of Invariant Difference Schemes

Vladimir Dorodnitsyn, Roman Kozlov
Pages: 16 - 50
In this letter we present the set of invariant difference equations and meshes which preserve the Lie group symmetries of the equation ut = (K(u)ux)x +Q(u). All special cases of K(u) and Q(u) that extend the symmetry group admitted by the differential equation are considered. This paper completes the...

The Impact of Home Computer and Internet Device on Students’ Academic Performance in the Digital Age

Yue Liu, Jiacheng Gao
In order to study the impact of home computers and the Internet on students’ academic performance in the current era of rapid Internet development, this paper is based on the China Education Panel Survey (CEPS) 2014-2015 academic year data, using quantile regression estimation methods, the research finds...
Proceedings Article

Hydrothermal Process Synthesizing of LiFePO4 with High-rate Capability and High Tap Density

Lou Xiaoming, Hu Bonian, Huang Jiali, Li Tanping
LiFePO4/C microspheres were synthesized by a rheological phase method using nanoplates assembled quasi-microspheres of FePO4·2H2O as raw materials, and the FePO4·2H2O precusors were synthesized via a hydrothermal process. The FePO4·2H2O precursors were characterized by XRD and SEM, and the LiFePO4/C...

Discussion on the Planning and Design of Waterfront Space-Take Shanghai as an Example

Jing Wang, Yue Huang
Waterfront green spaces are valuable natural resource of the city, which has the functions of purifying air, cleaning waste water, maintaining water source and improving the climate environment, and it is an important part of the urban ecological lung and ecosystem of ecological city. This paper summarizes...

The Effect of Socialization, Training and Assistance Activities on Pokdarwis Satisfaction and Participation Levels in Managing Tourism Villages

Nyoman Dini Andiani, Ni Made Ary Widiastini, Made Aristia Prayudi
This study aims to study about an effect of dissemination activities, training, assistance on the level of satisfaction of members of the Sekumpul tourism awareness group in the village of Sekumpul, Sawan district, Buleleng regency, in receiving education provided, to develop the potential of the village...
Proceedings Article

Correlation Between the Leukocyte Count with Neutrophil Lymphocyte Ratio in Hyperuricemia

Meri, Rianti Nurpalah
Hyperuricemia is a condition characterized by an increase in uric acid levels in the blood. It can cause inflammation. The sign of inflammation is to check the count of leukocyte and the parameter neutrophil-lymphocyte ratio (NLR). The condition of the number of leukocytes with NLR in hyperuricemia needs...
Proceedings Article

High Dividend Shares Investment Decision in Indonesia Stock Exchange: Bottom-Up Approach

Eddy Sutjipto, Wawan Setiawan, Dyah N.A. Janie
Investing in the capital market is high risk and return. Hence, investors need to use the right strategy by using the bottom line, primarily to determine the intrinsic value of shares. The problem is currently around 85–90% of capital market players in Indonesia experiencing failure because of using...
Proceedings Article

Research on the Influence of High-tech Industry Technology Innovation Investment Ability on High-quality Development—Empirical Analysis Based on Provincial Panel Data

Wanbing Xing
Science and technology is the primary productive force, and also the inexhaustible driving force for high-quality development, so the research of technological innovation affecting high-quality development has become the focus of all sectors of society. Comprehensively improving the capacity for technological...
Proceedings Article

Application of Gibberellic Acid (GA3) and Coconut Water with Stratification on Morphological, Anatomical, and Germination of Cherry Seed (Prunus jamasakura)

Ika Fitri Ariyani, Solichatun, Suratman, Sugiyarto
Prunus jamasakura Siebold ex Koidz. (hill cherry) is included in the family of Rosaceae and used for ornamental plants. The dormant cherry seed has become an obstacle since it takes a prolonged time to germinate. Seed germination can be induced by the application of gibberellic acid (GA3) and coconut...

Morphological Changes in Words with Superlative Meanings in the Javanese Language of the Magelang Sub-Dialect in Speech Communities in the Andong and Telomoyo’s Mountains

Rumtini Rumtini, Hary Sulistyo, Endang Sartika, F. X. Sawardi
This paper discusses the superlative meaningful words of the speech community in the Andong-Telomoyo Mountain area, which is on the west side of Mount Merapi-Merbabu from a morphological perspective. The discussion on the Magelang sub-dialect is interesting because as a characteristic of people who live...

The Influence of Mall Attributes, Content Marketing, Event Marketing, and Social Media Marketing on Customer Satisfaction, with Customer Engagement Serving as An Intervening Variable

Shindy Sabelita Bailia, Raden Teja Yokanan, Anita Primastiwi, Ade Kristianus Kaloeti
This research elucidates the findings of an investigation that examines and evaluates the degree to which various factors affect mall attributes, content marketing, event marketing, and social media marketing about customer satisfaction, with customer engagement acting as a mediating variable at Pakuwon...

The Utilization of Virtual Tour 360 for Sustainable Islamic Tourism: Systematic Literature Review

Sugiharto Sugiharto, M. Taufik Rahmadi, Eni Yuniastuti, Ayu Suciani, Tumiar Sidauruk, Eka Suci Anja Kusumawati, Alvin Pratama
Tourism is a strategic sector that contributes significantly to GDP and employment, so it needs to be managed sustainably by paying attention to social, cultural, and environmental values. Halal tourism has emerged as a form of value tourism per Sharia principles. Indonesia has excellent development...

The Evaluation of E-Learning in Logistics Distribution Practicum Courses Based on Students’ Future Orientation and Case Studies

Ares Albirru Amsal, Laela Susdiani
Logistics Distribution Practicum (LDP) is a course that plays an essential role in the industrial era 4.0. This course provides skills regarding the movement of goods and services relevant to today’s online buying and selling transactions. Thus, course learning can not be separated from the motivation...

A simulation study of outpatient scheduling with multiple providers and a single device

Xiao-Dan Wu, Mohammad T. Khasawneh, Dian-Min Yue, Ya-Nan Chu, Zhan-Ting Gao
Pages: 15 - 25
Effective outpatient appointment scheduling aims at reducing patient waiting time and operational costs, and improving resource utilization, especially given the stochastic nature of patient arrivals. Unlike many western developed countries, China faces challenges due to imperfect appointment systems...

How Does Beliefs Work as a Barrier Affecting Consumer’s Attitude Towards Luxury Brand’s Consumption

Huaiyue Yun
Consumer beliefs act as barrier towards purchasing luxurious and prominent brands among consumers. In recent decades, China has experienced significant growth in the consumption of luxury goods and services attributable to consumer beliefs. Our research focuses on consumer beliefs enhancing the consumption...
Proceedings Article

Chinese Question Classify Model Based on Interrogative Semantic Unit

Yue Hu, Bo Liu, Shouwei Zhang
The concept of interrogative semantic unit was proposed, recognition algorithm for interrogative semantic unit was provided on the basis of this concept, and question classification was carried out by combining interrogative semantic unit with HowNet. The test shows that this method obtains good classification...

Analysis of piano accompaniment to Sax

Yue Wang, Yu Xie
With the development of various industries in our country, musical instruments industry has a great development in recent years, various styles of musical instruments emerge in an endless stream. Piano music is very popular in Chinese, it is mainly pop music arranger, in the field of music is very important....
Proceedings Article

Design of a Power Amplifier using MESFET at 2.7GHz ~ 3.1 GHz

Junsheng Li, Jian Tang, Yunhui Jiang, Fei Yu
In this paper, a linear power amplifier with MESFET tube is simulated and optimized by the application of ADS software and S parameter method. The MESFET tube is a kind of low distortion power FET provided by the company of Excelics and its tag is EFC480C. After optimizing the size of the power amplifier...
Proceedings Article

The Influence of Teaching Styles on the Skill of Badminton Reviewed from Motor Educability

Ashadi Cahyadi, Herman Subarjah, Yunyun Yudiana, Yusuf Hidayat
Introduction: teaching style is considered to have an influence on badminton skills by looking at the aspects of motor educability. Purpose: This study aims to see the influence of teaching style on badminton skills in terms of high motor educability. In this study also pay attention to the influence...
Research Article

Viscoelastic mechanical measurement of the healthy and atherosclerotic human coronary arteries using DIC technique

Alireza Karimi, Ahmad Shojaei, Reza Razaghi
Pages: 14 - 21
Purpose: Atherosclerotic is a specific form of vascular disease showed to be in charge of the 30% of mortalities in the United States alone. Many studies so far have been reported on the linear and nonlinear mechanical properties of the human and animal coronary arteries. However, the Quasilinear Viscoelastic...
Proceedings Article

Profile of The Indonesian Essential Oil from Melaleuca cajuputi

Sutrisno Sutrisno, Rini Retnosari, Henie Poerwandar Asmaningrum
The chemical composition of three cajuput essential oils of Melaleuca cajuputi (M. cajuputi) from different area in Indonesia were analyzed using gas chromatography–mass spectrometry to determine the similarities and differences among their volatile chemical compositions. These cajuput oils come from...
Proceedings Article

Noise Margin and Delay Analysis of Half Stacked and Full Stacked SRAM Cell Design

Balwinder Raj
In this paper we propose a half stacked and full stacked SRAM cell design for low power application. This based on the “Stacking Effect of Transistors” with stacking of the driver and the load transistors to reduce the total power consumed in the SRAM cell. The results obtained on basis of proposed half...
Proceedings Article

The Dynamics of Scientific Literacy Skills of Biology Students in Histology Lectures Using Scientific Literacy-Based Worksheet

Nur ducha, D Hariani, W Budijastuti
Scientific literacy skills are essential for students, as it related to how students can understand their environment and their various life problems. The purpose of this research was to study the dynamics of scientific literacy skills of biology students in histology lectures. This research used a descriptive...
Proceedings Article

The Effect of Invasion Games on the Students’ Self-Efficacy in Physical Education

Dedi Supriadi, Vicki Ahmad Karisman
This study was aimed at exploring the contribution and the use of physical education in elementary school through invasion games learning to improve the students’ efficacy. The researcher used experimental method with pre-test and post-test control group design. This study involved 87 4th grade students...

Experiential Learning Methods to Improve Young Children’s Science Process Skills During Covid-19 Pandemic

Heni Nafiqoh, Ghina Wulansuci
The research objective was to determine the effect of experiential learning methods on early childhood science process skills in the Covid-19 Era. This research is a pre-experimental design using one group pre-test & post-test design. This data collection technique uses observation, interviews, and...
Proceedings Article

Developing Early Detection Questionnaire for Diabetes Mellitus Disease Type 2 Based on the Diet

Septa Katmawanti, Novita Dwi Mugiarti, Hartati Eko Wardani
Diabetes Mellitus disease is one of the Non- Transmissible Diseases (NTD) with rising amount of sufferer. The lifestyle in food consumption or diet, the lifestyle in selecting the place to eat, and the type of food consumed are some of the triggers of diabetes mellitus. This development research aims...

Research on the Operational Efficiency of NBA Clubs Based on DEA Model

Zhinan Mao, Qingmei Tan
Based on the data of 30 NBA teams in the 2018-2020 season, establish an input-output indicator system. Use the data envelopment analysis method to measure and analyze the efficiency of the team club. The results show that the efficiency of each club in the NBA is quite different; there are more teams...

Creative Thinking Based on Mathematical Reasoning Ability in Solving Geometry Problems in High School

Ainun Rahma Firdausy, Triyanto, Diari Indriati
This study aims to describe mathematical creative thinking based on categories of mathematical reasoning at high, moderate, and low levels, in geometry problems. This research is a qualitative descriptive study. The test was given to 30 twelfth graders at SMA Negeri 4 Surakarta. Based on the results,...

Application of Gold Nanoparticle-Based Colorimetric Methods in Virus Detection: A Narrative Review

Erindyah Retno Wikantyasning, Hasna Adilia Wibowo
Virus infections are one of the leading causes of rising global health threats. Increasing virus infections will encourage the development of faster and more accurate diagnostic methods. Gold nanoparticle biosensors have the potential to become a simple and rapid colorimetric-based diagnostic method....
Proceedings Article

Numerical Model for Underground Hydrogen Storage in Cased Boreholes

Antoine Bachand, Bernard Doyon, Robert Schulz, Ralph Rudd, Jasmin Raymond
The decrease in generation costs of renewable energy, combined with advances in electrolyser technologies, suggest that green hydrogen production may be a viable option in the ongoing energy transition. Yet, a green hydrogen economy requires not only production solutions but also storage options, which...
Proceedings Article

Urban Forest Cover: Change and Response to Climate

Bayartulga Altankhuyag, Delgerjargal Dugarjav
Since 1990, due to Mongolia’s transition to a free market economy, the migration of the population to cities, especially to the capital, has rapidly increased. As a result, urban lands are expanding, forest use around the cities is becoming more chaotic, and the impact of urbanization on forests is increasing....
Proceedings Article

Challenges to performance testing of the cloud application developing

Yue Zhou, Wenchuang Qin, Nafei Zhu
When we perform a Cloud Application performance testing, traditional performance testing tool and method is limited by many characteristics which are different between Cloud Computing and traditional application. This article descripts the limitation and weak point of traditional tool and method for...
Proceedings Article

Texturization of Monocrystalline Silicon Wafers with K3PO4 /K2sio3 Solutions under Different Conditions

R.Z. Luo, S.Q. Man, Z. Jin, J.J. Ma, Y.Q. Wang, Q.Y. Ye
The pyramid construction was formed with different K3PO4 concentrations under different time and temperatures. The pyramid size, density and uniformity on monocrystalline silicon surface have been studied. We found that the K3PO4 concentrations and temperature has a crucial influence on pyramid density;...

Exploring on the Cultivating Model of the Combination of Working and Learning in Higher Vocational Education

Liying Liu, Renjie Yang, Shuwen Wang, Yue Zhao
Higher vocational college students should have professional and practical talents. The skilled personnel should have a strong ability of professional development, and can quickly adapt to the needs of enterprises and society. However, the current higher vocational education graduates cannot fully meet...
Proceedings Article

Anti-Inflammatory Effects of Kaempferia galanga L. Rhizome Extract in Carrageenan-Induced Female Rats

Galih Samodra, Dina Febrina
Kencur (Kaempferiae galanga L.) is a plant that is traditionally used for the treatment of various diseases including inflammation. This study aimed to know the comparison of the effectiveness of kencur extracts with diclofenac sodium as an antiinflammatory agent. Fifteen female rats aged 2-3 months...

Social Emotional Development of Early Childhood Through Traditional Games in PAUD Terpadu Hauriyah Halum City of Padang

Nina Ramayenda
This study was background by there are still parents who provide media for children’s games using gadgets and other modern games. The factors that influence it are social emotional changes that are unstable and temperamental, and social status. The purpose of this study is to: (1) analyze the factors...

The Effect of Apples as Self-Cleansing to Reduce Plaque Scores on Madrasah Ibtidaiyah Tarbiyah Islamiyah Students Palembang

Listrianah, R.A Zainur, Andre Trawijaya, Septi Alifa Cahyati
Plaque is a soft deposit that is tightly attached to the surface of a tooth consisting of microorganisms that multiply in an intercellular matrix when someone neglects the cleanliness of their teeth and mouth. Plaque can be cleaned mechanically or chemically. One of the ways to clean plaque is by consuming...
Proceedings Article

The Effect of Variation of Volume Fraction on Polyester-Team Wood Fiber Composite (Melaleuce leucandendra) on Thermal Conductivity Value

Rachmat Subagyo, Rudi Siswanto, Andy Nugraha, Syahrul Ramadhani
The current use of the gelam tree is only found in wood processing. On the other hand, gelam bark is not optimally utilized so as to produce unused bark waste even though the natural fiber of gelam bark is of high economic value. The purpose of this study was to determine the effect of volume variations...