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9649 articles

Research on Portfolio Optimization Based on Markowitz Model and Single Index Model

Yufei Jin
With the development of the economy, more and more retail investors participate in the stock market. The research aim of this study is to advise ordinary retail investors on how to build portfolios using Markowitz model and the single index model. The data used are the stock prices of 22 risky assets...
Proceedings Article

Evaluation of the Parking Space Capacity of Four-Wheeled Vehicle at the State Polytechnic of Sriwijaya

Kosim, Nadra Mutiara Sari, Dimas Ariezky Susetyo, Fany Fadhila, Ruspina Idella Ompusunggu
In order to determine whether dedicated parking places for four-wheeled vehicles are necessary on the State Polytechnic of Sriwijaya campus, this study is a follow-up on the parking situation on campus. This is very necessary to find out the need for parking lots as a reference for the design of effective...
Proceedings Article

BPJS Fraud Prevention Strategy at Royal Prima Hospital

Santy Deasy Siregar, Chrismis Novalinda Ginting, Cecilia Arnas Bertha Harefa
Fraud or fraud is an act that is against the law and is carried out intentionally for certain purposes that harm other parties. This research aims to find out some of the efforts made by RSU Royal Prima Medan in detecting and preventing fraud in BPJS claims. The method used in this research is a qualitative...
Conference Abstract

P5.25 DIURNAL VARIATION OF CARDIO-ANKLE VASCULAR INDEX IN INDIVIDUALS WITH AND WITHOUT HEART DISEASE

Yanlei Li, Cordes Mareike, Hanssen Henner, Schmidt-Trucksäss Arno
Pages: 150 - 150
Background: Clinical studies revealed age and pathological-related arterial stiffening. Arterial stiffening is associated with a higher risk of cardiovascular disease. Cardio-ankle vascular index (CAVI), which reflects both central elastic and peripheral muscular arterial stiffness, has been applied...

Jade: Reducing Energy Consumption of Android App

Hao Qian, Daniel Andresen
Pages: 150 - 158
The need for increased performance of mobile device directly conflicts with the desire for longer battery life. Offloading computation to multiple devices is an effective method to reduce energy consumption and enhance performance for mobile applications. Android provides mechanisms for creating mobile...
Proceedings Article

Anthocyanin Extraction from Clidemia hirta (L.) D. Don Fruit and Its Stability During Storage

Gayatri Annisa Larasati, Irvan Setiadi Kartawiria, Abdullah Muzi Marpaung
There have been concerns regarding the use of artificial food colorant, triggering the food industry to develop natural food colorant with nutraceutical properties, which could be solved by anthocyanins. A series of studies to evaluate the potency of harendong bulu (Clidemia hirta (L.) D. Don) fruit...

Research on Quality of Kindergarten’s Facilities Based on Children’s Perspectives

Huan Chen
Paying attention to the children’s opinions and listening to the children’s heart are very important to the formulating the kindergarten’s plan and improving education objectives. This research made use of the random sampling and purposive sampling and chose 32 5-years-old kids to recognize their degree...
Proceedings Article

Channel wave tomographic imaging method and its application in detection of collapse column in coal

Wei Wang, Guoqiang Xue, Xing Gao, Jiwen Teng, Huanyu Cui
Coal seam seismic survey collapse column is common in heterogeneous geologic bodies. Groud-3D seismic observation due to limitations of its accuracy, for uneven geological subsided column often small leakage test or position error is large, the impact of mining coal mine safety sometimes causing heavy...

A Summary of Metacognition Research on Second Language Learning in China

Xiaoting Zhang, Jing Xiao
Since the meta-cognitive theory was introduced to the field of language teaching and research in China, many meta-cognitive theory-based researches on English learning and teaching have been carried out. This paper reviews these researches and concludes the achievements as well as the shortcomings: (1)...

The Important of Physical Environment for Guest Satisfaction on Restaurant in Bali

I Gusti Ayu Dewi Hendriyani
The physical environment of a restaurant today, prioritized as one of the attractions of a restaurant for its customers. Customer satisfaction is the goal of all businesses including restaurants. Customer satisfaction is a dynamic condition associated with fulfilling customer expectations of the service...

Mathematics Errors in Elementary School: A Meta-Synthesis Study

Ni Luh Sakinah Nuraini, Puri Selfi Cholifah, Wisnu Cahyo Laksono
Understanding mathematical errors is important for improving learning. In order to map the pattern of studies related to the mathematical errors, this study used qualitative approach with systematic meta-synthesis method. Data collection conducted in this research using documentation techniques by reviewing...

Government innovation: The challenges and the best practice of smart city in Indonesia

Haidar Fikri, Didik G Suharto, Rino Ardhian Nugroho
Nowadays, the concept of city building by putting forward the smart city is mostly discussed by the Indonesian government. The discussion and ideas are from the assessment of government on the idea capability in building smart city to solve the problems in the city such as traffic jam, safety, and garbage....
Research Article

The Association between Retinal and Central Pulse Wave Velocity in the Elderly

Mahdieh Rezaeian, S. Mojtaba Golzan, Alberto P. Avolio, Stuart Graham, Mark Butlin
Pages: 148 - 153
Purpose: The retina provides a non-invasive window to monitor microvascular circulation. Carotid-femoral Pulse Wave Velocity (cfPWV) is an indicator of large artery stiffness and is associated with systemic cardiovascular diseases. This study investigates whether Retinal artery PWV (rPWV) reflects cfPWV...

Mobile Learning-Based Science Mathematic Story: Attracting Students Studying Interest

Muhammad Nur Wangid, Adi Hastomo, Fitria Nurulaeni
This is a survey study using questionnaire as the data collecting method. This study involved 144 students of 4th grade in Banguntapan sub district and Sleman sub district, Yogyakarta province. Study result shows that: 1) the availability of learning media usage is still low to support learning process;...

Quality of Arabushi and Katsuobushi from Skipjack Tuna, Bonito, and Yellowfin Tuna

Theresia Puspita
Keumamah is traditional food in aceh (likely arabushi or katsuobushi in Japan). The aims of the research are to determine best combination of frequency and time of smoking in the production of katsuobushi using different species of fish. This research Two Stage Nested Design used (species of fish and...
Proceedings Article

Development of the Snake Game Model for Basic Movement Skills in SD Medan Struggle Students

Eny Yusnita Pardede
In general, the purpose of this research is a development research that aims to produce a product in the form of a game model of ladder snakes that is modified game rules. This research is to produce a new book which will be developed for elementary students. The subjects in this study were Medan Perjuangan...

Good University Governance and Its Implication on Managerial Performance

Rita Martini, Kartika Rachma Sari, Rulyanti Susi Wardhani, Choiruddin Choiruddin
This study aims to identify and analyse: 1) the influence of internal control effectiveness (EPI), organizational commitment partially or simultaneously on the implementation of good university governance (GUG); and 2) the effect of EPI, organizational commitment, and GUG implementation on managerial...
Proceedings Article

Military Type III Anodizing: The Optimal Limit Within Hardening Process of Aluminium Alloy in a Near Zero Temperature

Ndaru Adyono, W D Lestari, Luluk Endahwati
Hard anodization was a method that can enhance aluminium alloy surface characteristics by growing an aluminum anodic oxide (AAO) film on it surface. This method was very applicable to obtain a thick and hard coating. This process was carried out at galvanostatic-potentiostatic mode at high current densities...

The Influence of Brand Image and Price Perception on the Purchase Decision of Royal Canin Cat Food in Pangkalpinang City

Sinda Indira, Nurul Anisyah, Ary Fakturrachman Aryansyah
This study analyzes the influence of brand image and price perception on purchasing decisions for Royal Canin cat food in Pangkalpinang City. Using a quantitative approach with 38 respondents through a 1-5 Likert scale questionnaire and purposive sampling technique. Data were analyzed with SPSS using...

Research on the Innovation of OFDI Models and the Enhancement of Cross-Border Trade Efficiency Based on Digital Platforms

Zhilei Lu
With the accelerating development of platform-based digital economies, digital platforms are profoundly reshaping the outward foreign direct investment (OFDI) models of multinational enterprises, promoting a transformation from traditional capital-driven approaches to data-driven and platform-coordinated...

An Analysis of the Effectiveness of China’s Monetary Policy Transmission Mechanism on GDP: Based on Vector Autoregression Model

Xianquan Meng
How monetary policy affects the level of macroeconomic development is one of the issues that economists have studied deeply. Based on quarterly data from 2004 to 2023, this paper establishes a VAR model and studies the effectiveness of credit channel and money channel on monetary policy transmission...
Proceedings Article

Enhancing Tea Leaf Disease Classification: Leveraging Data Augmentation, Diverse Feature Extraction Techniques, and Ensemble Stacking with Machine Learning Models

K. Somesh, C. Shanmukh Srinivas Sai, Nithin Mude, B. Surendiran, J. Dhakshayani
In recent years, the tea industry has gained newfound importance, driven by advancements in technological innovation and automation. These developments have played a pivotal role in boosting productivity and ensuring the quality of tea production. Within the field of tea agriculture, a crucial challenge...
Proceedings Article

Comparative Morphological diversity of cultivated and wild species of Vigna Savi

Queen Elizabeth Ile, Agbagwa Ikechukwu Ozoemena
One of the challenges faced in the study of this genus is the ability to identify them when encountered in the field. This study was carried out to Compare morphological characteristics of a panel of twenty-two (22) Vigna savi of some cultivated(5) and wild(17) species obtained from the International...

Determination of Bank Health Through Profitability as an Intervening Variable in Conventional Banks

Umi Subadriyah, Eleonora Sofilsa, Lavlimatria Esya
The aim of this study is to test the determination of bank health through profitability as an intervening variable in conventional banks. The study employed a quantitative approach, utilizing a structural equation model (SEM) analysis. The data is 105 conventional banks in Indonesia from 2018 to 2023....

Risk and Return Analysis of ESG Funds, Other Funds, and Nifty: Sustainable Development in India

Sachita Yadav, Phayetmi Mungrei
There is a need to accelerate climate financing due to climate change. For sustainable development, the pattern of investment should also change and follow the SDGs. There are a range of ESG investment alternatives available nowadays to contribute to sustainable development. As a responsible citizen...
Conference Abstract

P5.21 EARLY IABP INFLATION SUPPRESSES LEFT VENTRICULAR FUNCTION AS INDICATED BY WAVE INTENSITY ANALYSIS

C. Kolyva, G.M. Pantalos, J.R. Pepper, A.W. Khir
Pages: 149 - 149
Background: Timing errors during Intra-Aortic Balloon Pump (IABP) support can be detrimental when interfering with cardiac function. In vivo hemodynamics and left ventricular (LV) function were monitored during premature IAB inflation, and the associated mechanisms investigated with Wave Intensity Analysis. Methods:...

Cruise Ship: the Backbone of Future Tourism Industry in Indonesia

Tarsisius Catur Budi Nugraha
Indonesia considers the cruise ship industry as a potential source of economic growth. The paper discusses the cruise ship as the backbone of future tourism industry in Indonesia. The aim of the study is to provide some evidences of the discussion. The results of the study aim to help the stakeholders...

Exposure to toxics during pregnancy and childhood and asthma in children: A pilot study

Souheil Hallit, Pascale Salameh
Pages: 147 - 154
Environmental factors, pesticides, alcohol and smoking are linked to asthma in children. The association of toxic substances exposure with asthma has not been evaluated. Our objective is to assess such associations among children aged less than 16 years old. This is a cross-sectional study, conducted...

Pilot use of a novel smartphone application to track traveller health behaviour and collect infectious disease data during a mass gathering: Hajj pilgrimage 2014

Amani S. Alqahtani, Nasser F. BinDhim, Mohamed Tashani, Harold W. Willaby, Kerrie E. Wiley, Anita E. Heywood, Robert Booy, Harunor Rashid
Pages: 147 - 155
This study examines the feasibility of using a smartphone application (app) to conduct surveys among travellers during the Hajj pilgrimage, where the use of apps has not been evaluated for infectious disease surveillance. A longitudinal study was conducted among pilgrims at the Hajj 2014 using an iPhone...
Proceedings Article

Immunological reactivity of calves with associated respiratory infections

Antonina Poryvaeva, Elena Pechura, Oksana Tomskikh, Alexander Krasnoperov
Associated respiratory infections are a special type of infection. They have a combined effect on the organism. We conducted this study in order to determine impairment of immunological reactivity in calves aged from 5 days to 4 months for respiratory diseases caused by pathogen associations. Determination...

Design of Cooperative Learning Models in Physical Education Learning in Elementary School

Muhammad Fitri, Tri Irianto, Rahmadi
The purpose of this study was to determine the contents of the steps of the Learning Implementation Plan using the cooperative model (Cooperative Learning) for elementary school students in the City of Banjarbaru. The research method used in this study is a quantitative method by using surveys and documentation...

The Usage of Virtual Laboratory on Grade 11 Students’ Learning Outcomes Toward Physics

Sitti Lailatul Qamaria
This studied investigated the usage of virtual laboratory (VL) on grade 11 students’ learning outcomes of fluid statics and dynamics toward physics. The research used quasi experiment with the design of static group comparison that aimed to determine; 1) the magnitude of students’ learning outcomes by...

The Improvement of Children’s Social Emotional Achievement Through the Implementation of Traditional Games (An Action Research in Early Childhood Education (PAUD) Mutiara Hati Mataram 2015)

Istati Dwi Rahayu
The research aims to improve the children’s social emotionalachievement through traditional games. The traditional games are the solution for the existing cultural and untapped potential for the stimulation process in early childhood. The experiment was conducted among 16 children of group B of Early...
Proceedings Article

Spirituality Analysis in Elderly with Diabetes Mellitus Type 2: Phenomenology Study

Natar Fitri Napitupulu, Adi Antoni, Siti Isma Sari Lubis, Asnil Adli Simomora, Mastiur Napitupulu
Spiritual connects between intrapersonal (relationship with self), interpersonal (relationship between self and others), and transpersonal (relationship between self and god/occult power). The purpose of the study were expected to be developed through research by exploring more deeply the spiritual experience...

Mathematical Connection Analysis of High School Students with Accommodator and Diverger Learning Style

Kusnul Itasari, Ikrar Pramudya, Isnandar Slamet
The objectives of this paper is to look at how high school students with accommodator and diverger learning styles solve math problems. This type of research is exploratory descriptive research. The research subjects were students of SMA N Kebakkramat with accommodator and diverger learning styles. Data...

Evaluation of Pharmacy Technician Training Program

Ariunaa Damdinsuren, Tamir Khojoo, Jargalsaikhan Otgon, Baigalmaa Chuluunbaatar
Each educational institution evaluates its own program over a period of time and uses its outcomes in order to make some decisions on its advanced development. Therefore, a well-established program evaluation methodology is essential. The medical education field has been utilizing competency-based assessment...

Green Insurance and Total Factor Productivity of Enterprises

Yishuo Fan
Based on the data of China listed companies from 2012 to 2023, this study empirically examines the impact of green insurance on total factor productivity (TFP) of enterprises. The research finds that green insurance can significantly enhance TFP of enterprises, and this finding has been robustly tested...

Students’ Learning Obstacles on Fractions in Elementary School

Een Unaenah, Didi Suryadi, Turmudi
Fraction is one of the crucial concepts in mathematics learning. However, fractions learning does not fully involve various representations, which possibly results in learning obstacles. The purpose of this study is to identify and analyze students’ learning obstacles in addition and subtraction operations...
Proceedings Article

IoT Forensics with emphasis on Radar Technology

Syed Fazal Mehdi Moosvi
Radar enabled IoT devices are becoming common in homes, vehicles, and public areas, creating a new form of forensic evidence: continuous, unintentionally generated RF patterns that reveal presence, movement, and even physiological signals. This paper proposes a radar focused IoT forensics approach that...
Proceedings Article

Characteristics of Briquette as an Alternative Fuel Made of Mixed-Biomass Waste (Dairy Sludge and Coconut Shell)

Dodyk Pranowo, Tsamara Dhany Savira, Claudia Gadizza Perdani, Hendrix Yulis Setyawan
Coal is used mainly in boiler units as a heat energy generator. The non-renewable nature of coal encourages creating alternative fuels, such as briquettes. The abundance of organic material in dairy sludge has potentially becomes briquettes. To improve the quality of the briquettes, it is necessary to...

Smart Education System to Enhance Public Awareness about Climate Change: A Literature Review

Albert Heriyanto, Elsa Firyanza, Lai Soon Kian, Mutiara Nurul Iman, Nunu Fauzan Helwah, Raden Isma Anggraini
Climate Change has become the greatest challenge of the 21st century threatening all aspects of society because it’s caused severe changes for people, natural ecosystems and economies around the world. Indonesia is one of the countries most at risk of climate change impact. Knowledge of climate change...
Proceedings Article

Research on Technologies and Construction Application of 3D Intelligent Milling

Xin Yang, Hongbo Liao, Jinqiang Yang, Xiaobo Du, Jie Wang, Wenrui Li
To address the problems of insufficient milling accuracy, limited bottom surface smoothness, and unstable paving quality in conventional milling operations, this study focuses on 3D intelligent milling technology. The key procedures, including high-precision pavement information acquisition, point cloud...

Digital Transformation and Carbon Accountability: An Emissions Data Analysis of Telkom Group’s Pathway toward Net-Zero Operations

Liza Mahavianti Syamsuri, Faiza Nurin Kamila, Whildan Pakartipangi
The rapid expansion of digital infrastructure has positioned the telecommunications industry as both a key enabler of digital transformation and a significant consumer of energy. This paper analyzes Telkom Group’s greenhouse gas emissions profile from 2023 to 2025, focusing on Scope 1, Scope 2, and Scope...
Proceedings Article

Anti-fatigue Properties of Icariin Isolated from Epimedium Brevicornum Maxim in Mice

Changjun Li, Ang Li
Aim of the present study was to evaluate the anti-fatigue properties of icariin in mice. The animals were divided into four groups, namely the control, low-dose icariin treated, medium-dose icariin treated, and high-dose icariin treated groups, which received distilled water and 5, 10 and 20 mg/kg icariin,...
Proceedings Article

Weight Distributions of Divisible Codes Meeting the Griesmer Bound over F5 with Dimension 3

Fangchi Liang, Yuena Ma, Tao Ku
Based on a relationship between generator matrix of given code and its weight distribution, all [31s+t, 3] 5(t=7, 13, 19, 25) optimal divisible codes with divisor 5 are determined by solving systems of linear equations. Then their generator matrices and weight polynomials of these optimal divisible codes...
Proceedings Article

Effectiveness Of Water Filter With Circulation Method As A Control Of Larva Aedes Aegypti And Clean Water On Household Enterprises

Jubaidi, Yusmidiarti
Cartridge filter is a tool that can filter solid substances dissolved in water both organic and inorganic substances. Total Dissolved Solid (TDS) is an important indicator in water sanitation, the greater the TDS the greater the level of pollution. Aedes aegypti mosquito is a vector of dengue disease...

Effect of VBA Learning Media to Improve Students Decision Making Skill of Elementary School

Galih Rahayu, Hana Arga, Deden Altaftazani, Martin Bernard
The background of the problem is the low decision-making skills of students, especially in social studies learning in elementary schools. This is the lack of learning during the learning process, the absence of learning media related to decision-making skills during learning, students are not accustomed...
Proceedings Article

Effectiveness of Allium Sativum and Olive Oil in Overcoming Pruritus in Kidney Failure Patients at Hemodialysis Unit of Dr. Soekardjo Hospital, Tasikmalaya City

Hana Ariyani, Rikky Gita Hilmawan, Lutfi S Baharudin
Objective: This study aimed to determine the effectiveness of Allium Sativum and Olive Oil in overcoming pruritus in kidney failure patients at Hemodialysis Unit of dr. Soekardjo Hospital Tasikmalaya City. Method: This study was a pre-experimental study “one group pre-test post-test” design. The sample...

Mantuku (Manekin Tubuhku: As an Adaptive Media for Sex Education to Toddlers)

Nor Laili, Vivi Mariesca Vibraena, Novira Silmi, Umi Safiul Ummah, Mohammad Efendi
Sexual assault to children in Indonesia or global has become a serious issue. Ideally, sex education is introduced since the children is in early age. Therefore, MANEKIN TUBUHKU (MANTUKU) is made as an adaptive technology for sex education to early childhood. This research includes a research and development...