bluuebunny/crossref_metadata_2025 huggingface dataset:
Pengaruh Penerapan Model Pembelajaran Contextual Teaching and Learning terhadap Kemampuan Komunikasi Matematis berdasarkan Self Confidence Siswa SMP/MTs
Authors: Rahmi Siti , Hasanuddin H
Published: February 2020

Abstract: This study aims to determine the effect of 'Contextual Teaching and Learning' on students 'mathematical communication skills in terms of students' self-confidence. This research uses factorial design. The population in this study were all students of class VII Madrasah Tsanawiyah Ansharullah Birandang Island in the academic year 2018/2019. The sample of this study is students of class VII.B as an experimental class and class VIII as a control class. The instrument used was a questionnaire instrument to measure the level of students 'Self Confidence and description tests to measure students' mathematical communication skills. Data were analyzed using two-way ANOVA. Based on the results of data analysis, it can be concluded that: 1) There are differences in mathematical communication skills between students who take the CTL learning model and students who take conventional learning. 2) There is no influence of the interaction between CTL learning models with Self Confidence on students' mathematical communication skills. Thus in general the CTL learning model influences students' mathematical communication skills.Abstrak: Penelitian ini bertujuan untuk mengetahui pengaruh 'Contextual Teaching and Learning' terhadap kemampuan komunikasi matematis siswa ditinjau dari self-confidence siswa. Penelitian ini menggunakan disain faktorial. Populasi dalam penelitian ini adalah seluruh siswa kelas VII Madrasah Tsanawiyah Ansharullah Pulau Birandang tahun ajaran 2018/2019. Sampel penelitian ini adalah siswa kelas VII.B sebagai kelas eksperimen dan kelasVII.A sebagai kelas kontrol. Instrumen yang digunakan adalah instrumen angket tuntuk mengukur tingkat Self Confidence siswa dan tes uraian untuk mengukur kemampuan komunikasi matematis siswa. Data dianalisis dengan menggunakan anova dua arah. Berdasarkan hasil analisis data dapat diambil kesimpulan bahwa: 1) Terdapat perbedaan kemampuan komunikasi matematis antara siswa yang mengikuti model pembelajaran CTL dengan siswa yang mengikuti pembelajaran konvensional. 2) Tidak terdapa tpengaruh interaksi antara model pembelajaran CTL dengan Self Confidence terhadap kemampuan komunikasi matematis siswa. Dengan demikian secara umum model pembelajaran CTL berpengaruh terhadap kemampuan komunikasi matematis siswa.
Penerapan Model Pembelajaran Kooperatif Tipe TPS untuk Meningkatkan Minat Belajar, dan Hasil Belajar Matematika Siswa Kelas X MIA 1 MAN 1 Pekanbaru Tahun Pelajaran 2016/2017
Authors: Hendrasusita Hendrasusita
Published: February 2020

Tujuan  penelitian ini adalah  meningkatkan minat dan kemampuan matematis  dalam pembelajaran matematika dengan penerapan model pembelajaran Think- Pair- Share. Jenis penelitian ini adalah penelitian tindakan kelas (classroom action research), yaitu penelitian reflektif oleh prilaku tindakan yang dilakukan oleh guru sendiri untuk memperbaiki proses pembelajaran yang dilaksanakan atas dua siklus. Penelitian ini dilaksanakan mulai bulan januari  dan berakhir juni 2017. Subjek  dalam penelitian  ini adalah siswa-siswi kelas X MIA 1 MAN 1 Pekanbaru yang berjumlah 30 orang. Instrumen penelitian adalah angket, kuis, tes hasil belajar yang diberikan pada setiap akhir siklus, lembar observasi keterlaksanaan pembelajaran dan catatan lapangan. Data yang terkumpul dianalisis secara deskriptif.  Hasil penelitian menunjukkan bahwa minat belajar dan hasil belajar siswa meningkat dari  rata-rata kuis  pada pertemuan pertama 62,2 menjadi 77,9 pada pertemuan ke enam  dan tes hasil belajar  dengan rata-rata 61 pada siklus I meningkat menjadi 76 pada siklus II dengan  persentase ketuntasan siswa 26,7% pada siklus I meningkat menjadi 75,9 % pada siklus II.  Minat  siswa dalam belajar terlihat pada perhatian belajar, kemauan, merasa senang, semangat dalam belajar dan mengerjakan tugas mengalami peningkatan dari kategori kurang menjadi tinggi. Dapat disimpulkan bahwa dengan menggunakan model pembelajaran kooperatif tipe Think - Pair- share dapat meningkatkan hasil belajar dan minat belajar siswa.
Insurance Sector Development and its Effect on the Financial Markets in Developing Countries: The Case of Kosovo
Authors: Baruti Blerta Haliti
Published: February 2020

The purpose of this paper is to extract the important factors in the nature of insurance companies and their direct role in the economic and financial system development. This market study aims to analyse the insurance system in Kosovo by determining and then analysing its structure, the degree of concentration of insurance companies on the insurance market, their behaviour towards price, number of participants, companies operating in this market and types of products and services they provide. Our analysis are gathered on statistical and qualitative data through the study of the theories on insurance market development in other countries. Furthermore, for the empirical analysis, we used secondary data from Central Bank of Kosovo, Insurance Companies and Association Insurance of Kosovo. Also, we conducted two surveys. First, we conducted a survey with finance managers from all insurance companies and secondary survey was in general, for people who work. This way we tried to get a better understanding of the issue at hand.  The identification of these factors would enable insurance companies to design policies that tackle the demands of consumers for voluntary insurance policies and at the same time to contribute to financial stability of Kosovo’s economy. At the end we have to come out with conclusions on the main research question: Does Insurance Development affect the Financial Markets in developing countries? The expected outcome is that the insurance sector in Kosovo is an important factor for the further development of the financial system.
Camshaftless Technology on Internal Engines
Authors: Pham Van Viet
Published: February 2020

Along with the development of internal combustion engines, camshafts have also been developed to optimize engine performance. In all types of internal combustion engines, the crankshaft is connected to the camshaft via a toothed belt, chain or pinion. When the crankshaft turns, the camshaft spins and opens and closes the intake and exhaust valve respectively. However, in this non-camshaft engine technology, each intake and exhaust valve will be integrated with an electronically controlled hydraulic pump unit. This system provides a unique ability to independently control intake and exhaust valves. For any engine load, load and discharge times can be programmed independently. The decision system is based on driving conditions, used to maximize performance or minimize fuel consumption and emissions. This allows a greater degree of control over the engine which in turn provides significant performance benefits. This article presents reviews of camshaftless technology developed by VALEO. It is a system that uses solenoid valves to open and close the valve. The solenoid valve will be mounted right on top of the valve inside the engine. The author can see that the technology using this electronic control valve will help reduce the fuel consumption of the engine.
Molecular Characterization of Fumonisin Mycotoxin Genes of Fusarium sp Isolated from Corn and Rice Grains
Authors: Al-Husnan Latifa , Al-Kahtani Muneera , Farag Randa
Published: February 2020

Fungi mycotoxins can be a serious risk to health and lead to substantial economic loss. The environmental conditions of Saudi Arabia, with its mostly warm temperatures, are conducive to the growth of toxigenic fungi resulting in mycotoxin production in different food items. The current study elucidates the natural occurrence of toxigenic fungi and mycotoxin production in grains in Saudi Arabia. Samples of white rice and corn (yellow, red) grains were collected from different local markets and houses. Three fungal isolates were obtained from the corn and rice grains and examined using Potato Dextrose Agar (PDA) and Carnation Leaf Agar (CLA) media. Fusarium spp. were the most prominent fungi in yellow corn, red corn and white rice grains. Three isolated F. moniliforme strains were identified using molecular characterization of the trichothecene 3-O acetyltransferase (TRI101) toxin gene. The DNA genome of the three Fusarium moniliforme isolates (namely, F. moniliforme_1, F. moniliforme_2 and F. moniliforme_3, which correspond to isolates from yellow corn, red corn and white rice, respectively) were used as a template for PCR to amplify trichothecene 3-O acetyltransferase (TRI101). Partially sequenced fragments amplified using a specific primer set were used to confirm the identification of, and to evaluate the phylogenetic relationships among the three isolates as well as  to identify the corresponding antigenic determinants. The epitope prediction analysis demonstrated that there were four epitopes with scores equal to 1 in F. moniliforme_1, F. moniliforme_2 and F. moniliforme_3, respectively. Interestingly, there were great dissimilarities in the epitope sequences among the three isolates except in NSTPRACASEQEVS, STSSRADSSSLSTD and CTLCPRSLMASSVR. This indicates that the unique antigenic determinants predicted in the trichothecene 3-O acetyltransferase (TRI101) toxin gene could be used for designing a broad spectrum antibody for rapid detection of Fusarium spp. in foods.
La ley sobre convenciones colectivas de trabajo de 1953 y la opinión sindical en su tratamiento parlamentario. Discusiones tempranas del “modelo sindical argentino"
Authors: Afarian Jorge , Pasarín Sebastián Nahuel
Published: February 2020

La ley de convenciones colectivas de trabajo de 1953 vino a regular una de las prerrogativas obreras esenciales durante el primer peronismo. Este proyecto resultó la primera oportunidad en la que el “modelo sindical argentino” fue discutido específicamente en el Congreso Nacional, al tiempo que su aprobación implicó un importante capítulo en el proceso histórico de autonomización y jerarquización del derecho del trabajo.

Uno de los objetivos principales de este artículo es vincular las intervenciones parlamentarias de los diputados y senadores en el marco de la discusión del proyecto, con las conversaciones actuales en la materia. En este sentido, haremos especial hincapié en aquellos representantes de extracción sindical. Sumado a ello, vincularemos estas discusiones con el contexto histórico-jurídico de creación de esta norma.

Utilizaremos como insumo principal los debates parlamentarios de aquel proyecto, convertido en ley en septiembre de 1953 con el número 14.250, que aún se encuentra vigente con mínimas modificaciones. A su vez, recurriremos a bibliografía especializada sobre la temática, mayormente artículos, obras individuales y colectivas.

Concluimos que el valor de la fuente histórica directa radica no solo en que recupera voces y opiniones situadas respecto de una determinada estructura sindical y laboral que aún hoy nos rige, sino también en que resulta notable la actualidad de las posiciones teórico-políticas vertidas en este contexto, cuyos fundamentos no difieren sustancialmente casi setenta años después.
A Introduction to the Classical Spiral Electrodynamics: The” Spiral-Spin”
Authors: Fabbri Italo Mario
Published: February 2020

This paper demonstrates the existence of analytical solutions of the Lorentz equation for charged particles in “uniform pilot time-varying magnetic fields". These analytical solutions represent a temporal generalization of the Larmor's orbits and are expressed through a Schwarz-Christoffel spiral mapping or in spiral coordinates.

The concepts of "spiral-spin” moment and "polar-spiral" angular momentum are then presented, the existence of a subclass of solutions for which these two angular moments are conserved is demonstrated.

It is also shown that under the action of the "pilot fields," there exist particular trajectories for which the charged particles have a "spiral-spin" momentum constant proportional to +1/2 (solution named "spiral-spin-up ") and -1/2 (solution named "spiral-spin-down "), respectively.

The results are in full agreement with the ideas of L.DeBroglie and A. Einstein on the possible existence of pilot fields able to describe the physical reality deterministically.

Finally, the solution of the Lorentz equation is discussed with the WKB (Wentzel-Kramers-Brillouin) method for a superposition of two uniform magnetic fields with the same direction, the first constant and the second time-varying.
Couple Stresses and Thermophoresis Influences on Free Convective Heat and Mass Transfer of Viscoelastic Fluid with Hall and Ion-Slip Effects.
Authors: Shalaby Gamil
Published: February 2020

An analysis is presented to investigate the Hall and Ion-slip effects on non-Newtonian couple stress fluid flow between vertical channel in the presence of thermophoresis phenomena. The considered fluid obeys to the viscoelastic second-grade model. The problem is modulated mathematically to describe continuity, momentum, temperature, and concentration equations. The influences of physical parameters of dimensionless equations of velocity components () and (), temperature () and concentration () have been shown in some of figuthe res, as well as skin friction (), Nusselt number() and Sherwood number() have been computed. It is found that the velocity  decreases with increasing in Hall parameter and Ion slip parameters.
Affective State Based Anomaly Detection in Crowd
Authors: Baliniskite Glorija , Lavendelis Egons , Pudane Mara
Published: February 2020

To distinguish individuals with dangerous abnormal behaviours from the crowd, human characteristics (e.g., speed and direction of motion, interaction with other people), crowd characteristics (such as flow and density), space available to individuals, etc. must be considered. The paper proposes an approach that considers individual and crowd metrics to determine anomaly. An individual’s abnormal behaviour alone cannot indicate behaviour, which can be threatening toward other individuals, as this behaviour can also be triggered by positive emotions or events. To avoid individuals whose abnormal behaviour is potentially unrelated to aggression and is not environmentally dangerous, it is suggested to use emotional state of individuals. The aim of the proposed approach is to automate video surveillance systems by enabling them to automatically detect potentially dangerous situations.
Social and Academic Investment
Authors: Foxx Krystal A.
Published: February 2020

Peer mentoring serves as a strategy for engaging students both academically and socially in higher education. A qualitative case study was conducted to examine the experiences of three first-year engineering student mentees of color who participated in a formal peer mentoring program. The study also explored the participants’ perceptions of the roles of race, ethnicity, and social capital in their peer relationships. During one-onone interviews, student mentees emphasized increases of social capital, such as more access and awareness of resources and added active roles in student organizations on campus through their relationships with assigned mentors. Additionally, mentee participants mentioned having stronger connections to their peer mentors because of similarities in age and experiences in the classroom. As participants described benefits of the peer mentoring relationship leading to higher academic performance, enhanced skills were a major highlight. These skills included effective note taking, better study habits, and more positive interactions with faculty. Although student mentees did not perceive that race and ethnicity played a major role in their peer mentoring relationships, the female participant acknowledged gender as a major factor of the educational experience in engineering. Overall, the study highlighted that formal peer mentoring programs are highly beneficial in the orientation and transition of first-year engineering students as they navigate higher education institutions.
How the Implementation of a First-Year Experience Program Could Improve Student Satisfaction and Sense of Belonging at an Urban Mid-Sized College
Authors: Wilkin Joshua
Published: February 2020

This study gathered information from first-, second-, and third-year on-campus students to better understand their perceptions of their college experiences and how the creation of a first-year experience program could improve student satisfaction and sense of belonging at an urban mid-sized college. The qualitative data in this study revealed the importance of utilizing students’ perceptions to improve the college experience.
Support Services for Students with Autism Spectrum Disorder in Higher Education
Authors: Claxton Bunnie , Claxton Russ , Keith Deanna , Yocum Russ
Published: February 2020

The purpose of this qualitative case study was to identify factors that impact learners with ASD in a university setting. Exploring the perceptions of students with ASD and support services faculty is crucial to gaining a comprehensive understanding of what factors impact learners with ASD in higher education. A case study design was utilized because it allowed investigation of a contemporary phenomenon within a real world setting.
Blueprints for Student Success
Authors: Oliveri Christiane , Funke Karen , Clark Jennifer , Seifert Tricia A.
Published: February 2020

This study sought to understand the questions current Montana high school students had about going to college. The best way to find this information was to approach the students themselves as the experts (Paterson, 2015) and engage in a phenomenological study to describe the lived experience of high school students in the anticipatory time prior to transitioning to college. Approaching them in a game-focused manner allowed for a shared exchange of information and generated a robust dataset.
Designing Transitional Programs to Meet the Needs of Multi-Ethnic First-Year Students
Authors: Nadler Daniel P. , Miller Michael T.
Published: February 2020

Colleges and universities often rely on transitional programs to convey a sense of institutional expectations to new students. These programs, however, are often defined and created from a perspective of history and tradition, and do not necessarily reflect the increasingly diverse college student population. Using the "CAS Standards for New Student Orientation," a student orientation program was reviewed with special attention to multi-ethnic student perceptions of the goals outlined in the standards. Using two years of data collection, the findings suggest that multi-ethnic students are more satisfied with the orientation program than are Caucasian students as measured by the CAS Standards.
Washback of English Proficiency Test in Classroom Activities at National University of Arts Education
Authors: Hoa Dinh Thi Phuong
Published: February 2020

A study in Vietnam concerning the effects of The Vietnam Six-levels of Foreign Language Proficiency Framework, specially English Proficiency Tests for graduates, on classroom teaching and learning activities are reported. The study explores the phenomenon of washback or backwash, the influences of testing on 9 teachers and 679 non-English major students. It is cited as the only known research investigating washback in language education through classroom observation. The study was conducted at National University of Art Education, and combined classroom observations with data from interview, questionaire responses and document analysis to determine whether washback exist, to what degree it operates, and whether it is a positive or negative force in this educational context. The insights from the findings indicate that washback of English Proficiency Tests for graduates occurred in both positive and negative forms, to some degree, in teaching and learing  content, methods and styles. Evidence of washback, both positive and negative, on the way teachers design tests was also found. This should help Vietnamese educators to prepare favourable conditions for enhancing the benificial washback of EPT. The findings have contributed to the knowledge of a nature of washback and consequently opened a new understanding to recognize the dissimilar levels of washback. further research is recommended.
Studying the Competencies of Citizens Responding to Industrial Revolution 4.0
Authors: Ba Nguyen Thai , Hoai Tran Thi
Published: February 2020

The Industrial Revolution 4.0 leads tomarketchanges in requirements for labours. The authors have studied domestic and international publications since 2014, interviewed 15 lecturers from Vietnam National University, Hanoi to propose the ten most necessary competencies of citizens adapting to human resources requirement of Industrial 4.0 Era. The proposed competencies include: (1) information technology skills, (2) creativity, (3) collaboration, (4) critical thinking, (5) problem solving, (6) communication, (7) emotion competence, (8) active and proactive learning capacity, (9) adaptability to changing work environment, (10) and entrepreneurship.
KAJIAN FURNITURE PADA RUMAH HUNIAN KOLONIAL BELANDA
Authors: Gunawan Irena Vanessa , Amelia Citra
Published: February 2020

The era of Colonization in Indonesia left many architecture and interior influence. For many years, colonizers especially Dutch and English have developed many architectural building which included their interior elements. Bandung, is one of the cities which enjoyed massive influence of Dutch colonialism design. However the change of people way of living and conducting business, change the city area planning. Most of residential areas now have becoming commercial/business area. Houses area are being leased or sold to be transformed into offices, cafes, restaurant or being entirely demolished into new buildings. There are still residential buildings from this era which are being kept as it is.Either by the owner and endorsed by the appeals of communities intended to preserve them as historical buildings. However there are not yet efforts to preserve the interior elements, especially the furnitures. Hence there are little knowledge about the development of furnitur design as a result of living culture of this period. The ones left are difficult to study as furnituer has shorter life span than building so it could be already altered, moved or sold. And in the meantime new furnitures could be acquired.Hence, it is the intention of this research to study what is left of furnitur from colonialization era in this paticular residential house. To try to documents and analyze what style and influence the commonly called â€œDutch Furnitureâ€ by Indonesian antique dealers and also by the people in general.. This research will try to find out how and why this particular style still exist through the colonialism era in Indonesia to be compared to the development of styles in the European world.
SIMBOL DAN ORNAMEN-SIMBOLIS PADA ARSITEKTUR GEREJA KATOLIK REGINA CAELI DI PERUMAHAN PANTAI INDAH KAPUK-JAKARTA
Authors: Lake Reginaldo Christophori
Published: February 2020

The Catholic Church building always displays symbols and ornaments as an expression of religious (sacred) faith and atmosphere. Symbols in the form of two-dimensional and three-dimensional objects arranged and beautified the church as well as religious significance. Symbols and ornaments are placed inside the church (interior) and outside the church (exterior), function to support the atmosphere of the church visually and help appreciate aesthetic, psychological and religious faith. Regina Caeli Catholic Church in Pantai Indah Kapuk Jakarta is a Catholic church that is characterized by modern architecture and features symbols and ornaments on the interior and exterior of the church. This paper describes the existence of symbols and ornaments -symbols in the church associated with obedience to the principles of modern architecture that underlies the design of the church. The research problem is how the existence of symbolic symbols and ornaments in the Regina Caeli Catholic Church, which are modern-minimalist architecture? The study was carried out by analyzing secondary data (photos and texts) and literature studies, then compared with the basic guidelines of Catholic church architecture and the principles of modern architecture. As a result, Regina Caeli's Catholic Church architecture is a modern architecture with a modern-minimalist expression. The existence of a symbol of the cross marks the existence of a Catholic church visually, the interior ornaments strengthen the uniqueness as a sacred (religious) space. The Regina Caeli Catholic Church has a modern architecture and provides a place for symbolic symbols and ornaments; there is a mixture of modern architecture with church symbolism as a relogious building.
Analysis of Innovation based on Technometric Model to Predict Technology Life Cycle in Indonesian SME
Authors: Rumanti Augustina Asih , Hadisurya Vania
Published: February 2020

Forecasting technology is one way that can be used to predict product life cycle. Product life cycle is very important to know, especially by organizations, that are in small medium level, like SME. This research will be conducted in SME Surya Usaha Mandiri, Daerah Istimewa Yogyakarta.Forecasting product life cycle that has been done, will direct this research toward the stage of product development. Stages of development of the products are a necessary stage for an organization, especially in SME, to innovate the product. The purpose of this research is to propose the development of products, such as the stages of innovation that can be done in SME Surya Usaha Mandiri, forecasting conducted based on life cycle assessment of products and technology components using technometric model. The results of this research are proposed innovation based forecasting and product life cycle assessment in SME Surya Usaha Mandiri using technometric model.

 

Keywords - product life cycle, innovation, technometric model, SME
Designing Floor Tile Warehouse Layout Using Heuristic Approach Method to Increase Warehouse Capacity and Reduce Travel Distance
Authors: Sari Tika Purnama , Ridwan Ari Yanuar , Aurachman Rio
Published: February 2020

XYZ Company is a distributor focused on distributing floor and wall ceramic tiles. XYZ Company has its own warehouse for storing finished goods with Last In First Out rotation. The XYZ Company Warehouse has an area of 12,312 m2 with floor stack system. An issue currently risen to the warehouse is that the warehouse is currently overcapacity that urges the company to store some of its SKUs to be stored out of the block or even outside the warehouse.  The overcapacity causes some problems including accessibility problem, distribution of storage and retrieval activities, and damaged product. In addition, higher throughput items allocation were not placed near to the input/output point so the material handling went through long travel to do its activities and it caused higher total travel distance. This research is focused on determining the warehouse layout to increase warehouse storage capacity and reduce travel distance. The procedure taken to solve the issue is by redesigning warehouse layout through heuristic approach method. The heuristic approach method is comprised by algorithms that can determine dimensions of storage zone and material assignment needed in designing warehouse layout. It is aimed at having some combinations of lane depths and storage zones to increase the warehouse storage capacity by considering the throughput of each SKU. The next step is allocating the items so it can reduce the monthly travel distance. The proposed design layout, shows that warehouse capacity increases by 35.53% or 5,319 pallet positions and monthly travel distance decreases by 24.58% or 216,032 meters.

 

Keywords—heuristic approach, travel distance, warehouse layout.
An Empirical Study on the Influence of Students’Awareness on the Brand Identity: A Case of Telkom University Indonesia
Authors: Wulandari Sari
Published: February 2020

Mergers made by IT Telkom and other higher education institutions such as IM Telkom, Telkom Polytechnic and STISI Telkom, have an impact on IT Telkom brand image. IT Telkom together with these institutions created a new brand name of Telkom University. The Brand of Telkom University uses a different brand identity from previous brand identity. The use of this new brand identity affects brand awareness and brand image of the previous brand of IT Telkom. This research is conducted to find out the people’s brand awareness of IT Telkom merger. The numbers of sample are 781 respondents. Data processing was performed using Chi - Square test. The results indicated that awareness of this mergers influences perceptions of competence and brand reputation, awareness of vision, mission, and motto affect all brand identity, and awareness of the logo affects the perception related to the relevance of brand identity as a whole.

Keywords—Merger, University, Awareness, Brand Identity
Designing Quality Management Systems For Thresher Production Using ISO 9001-2015
Authors: Putri Nilda Tri , Elsera Azira Fitira
Published: February 2020

CV Citra Dragon is a small and medium-sized industry that produces agricultural machine tools wich is located in Padang Pariaman, West Sumatra. CV Citra Dragon has been active in production since 1976 and has the potential to increase the production of alsintan in order to compete in and outside the country. Therefore, CV Citra Dragon needs to improve the quality of the products produced. The best way to recognize the product quality is by implementing the Quality Management System (QMS). QMS of CV Citra Dragon is necessary to expand to other products which is thresher machine. The research based on ISO 9001-2015 standards. The design of QMS on CV Citra Dragon was done through field survey. Documents made on thresher production units are two compulsory and mandatory records, working procedures on thresher production, as well as working instructions and recording forms required. Once a quality document has been created, the analysis was performed by comparing the pre-existing QMS with the most recent QMS tailored to ISO 9001-2015. Therefore, some documents must be obtained by ISO 9001-2015 in accordance with the QMS used CV Citra Dragon was based on the main process approach. The results of documents that have been verified by the company are the scope of the QMS, quality policy, quality objectives, criteria for evaluation and selection of suppliers, product realization planning records, design and development records, product review, and monitoring records and measurement results. The existence of a good quality document is very important for companies to implement QMS.

 

Keywords : Document, Quality Management System, thresher.
AN OPTIMAL ORDER QUANTITY OF SPARE PARTS TO MINIMIZE TOTAL INVENTORY COST USING PERIODIC REVIEW APPROACH (R,s,S) METHOD IN PT XYZ BANDUNG
Authors: Purba Feviana Betsi , Andrawina Luciana , Astuti Murni Dwi
Published: February 2020

The availability of spare parts is very crucial thing for manufacturing company in order to support the continuity of production activities. PT XYZ is a manufacturing company which produces thread into fabric. In this case, inventory control of spare part is not properly managed. Inventory position of spare parts in warehouse is always more than inventory policy of the company itself or called overstock which causes total inventory cost is always high. Company only consider on the order fulfillment of spare parts to prevent downtime on the machine that increase performance of production. Hence, order quantity of spare parts is always excessive or not optimal. In this research, global inventory policy conducted in order to minimize total inventory cost is periodic review approach (R, s, S) method. This inventory policy will be calculated using power approximation and obtained total saving cost of holding cost by 31 % while total saving cost of order cost decreased by 7 %. Overall, total inventory cost minimized

by 7 % or equal to Rp138.902.742.

 

Keywords—Inventory, Overstock, Spare Parts, Periodic Review, Power Approximation
Proposed Policy Preventive Maintenance Machine Moriseiki NH 4000 DCG Method of Reliability Center Maintenance (RCM) And Risk Based Maintenance (RBM) Case Study PT Pudak Scientific
Authors: Husaini Fachri , Alhilman Judi , Athari Nurdinintya
Published: February 2020

PT Pudak Scientific is a company engaged in the manufacture of aircraft parts industry. Meeting the precise and timely demand of aerospace parts from customers becomes a major corporate responsibility. However, Loss Revenue often occurs due to engine breakdown. So that cause because the production target is not achieved, the product reject, and the delay of delivery. One of the machines that often experience breakdown is Mori seiki NH4000 DCG. Mori seiki NH4000 DCG is the finishing machine for Blank fork End product. The demand for this part is quite large, making it a tough task for the Mori Seiki NH4000 DCG machine. But because the breakdown of the machine is high enough to cause production targets every month are often not met. In addition, Maintenance activities that have not noticed the characteristics of engine damage, as well as the distribution of historical data of the machine causing less effective and efficient actions resulted in substantial Maintenance costs. Based on the results of risk analysis of Mori Seiki NH4000 DCG engine damage, in terms of performance loss system caused by a large enough that is 3.773% of machine production capacity per year. This figure exceeds the risk acceptance criteria by the company that is 2%. Therefore it is necessary to find the appropriate Maintenance policy for the Mori Seiki NH4000 DCG machine. The approach is to use Reliability Centeres Maintenance and Risk Based Maintenance. Based on the above two approaches obtained the appropriate interval time so that the Maintenance activities more effective and can improve the efficiency of treatment by reducing the cost of care previously Rp167.506.286, - per year, to Rp 96.147.061, - per year. With the policy is expected to reduce engine breakdown and performance loss caused. So the number of risks that arise for the future are within the criteria of acceptance set by the company.

 

Keywords: Preventive Maintenance, Reliability centered Maintenance, risk based Maintenance, Performance loss
Designing Risk Qualitative Assessment on Fiber Optic Instalation Project in Indonesia
Authors: Pratami Devi , Fadlillah Fachri , Haryono Imam , Bermano Ageak Raporte
Published: February 2020

A project always has risks that can lead to project failure. In the project, a risk analysis is required to provide an evaluation for the project to proceed as planned. In the event of inadequate planning and ineffective control, it will result in irregularities identified as a risk to the project. This study aims to analyze the qualitative risk on Fiber Optic Installaion project in Sukabumi, West Java, Indonesia. In addition, risk assessment is undertaken on project implementation. Assessment of risk using the impact and probability to measure the impact of risk occurrence. The impacts are more detailed by classified by time impact, cost impact, quality impact, safety and security impact, proximity. The result is there are 36 risk that may occur and mostly risks are associaated by quality and safety&security impact.

Keywords—  risk assessment, qualitative analysis, Project, fiber optic.
Maintenance System of Universal Goss Printing Machine based on failure data using RCM and RCS method
Authors: Alhilman Judi , Atmaji Fransiskus Tatas Dwi , Aulia Valinouski
Published: February 2020

Over time a machine will get experience a decrease in reliability, causing the engine to be damaged at the time of operation, thus disrupting the production line. To maintain a machine remains reliable then a good maintenance system is required. In this research, we will use Reliability Centered Maintenance (RCM) and Reliability Centered Spare (RCS) analysis on the critical system of Goss Universal printing machine based on engine failure data. The result of RCM analysis obtained the optimal preventive maintenance schedule and the type of treatment, while based on the RCS analysis obtained spare part needs following the maintenance schedule. With the result of this analysis, is expected where the machine will keep good and will continue to operate without a sudden breakdown under the production schedule's need. Based on RCM analysis for each critical subsystem obtained interval preventive maintenance for transfer roller 127.60 hours, Ink fountain roller 24.45 hours, ink form roller 29.23 hours respectively, and the wash-up device is no scheduled maintenance. For spare parts inventory strategies the result using RCS method are: transfer roller104 units, ink fountain roller requires 32 units, ink form roller 36 units and are holding spare policy required, and a wash-up device no holding spare parts.

Keywords— Failure data, Maintenance System, RCM, RCS
DESIGNING ROUTE DISTRIBUTION USING TWO PHASE TABU SEARCH ON HETEROGENOUS FLEET VEHICLE ROUTING PROBLEM WITH TIME WINDOW IN PT. XYZ TO MINIMIZE TRAVEL DISTANCE
Authors: Brilliane Citra Septi , Ridwan Ari Yanuar , Aurachman Rio
Published: February 2020

XYZ is a pasteurization milk processing company that produce milk drink from pure cow milk. PT. XYZ don’t sell their product directly to end user, instead they distribute their product to many companies which serve milk for their employees or operators in lunch time. So, their customer is mostly a manufacture company from various kinds of industry. They have about 40 customers and most of them are outside Bandung. However, the delivery may not be done as planned. The average on time delivery is around 96%. it is below PT. XYZ target which is 98%. The impact of the delay itself is vary between customers. Because when delay occur, each customer has their own regulation that has been settled in agreement contract. Based on the delay recapitulation above, there are several factors that caused this problem. Delay in departure is the most influential factors. It is because PT. XYZ don’t have fixed schedule of delivery and they miscalculate the departure time because of improper route determination that also leads to longer travel time. This case is categorized as Vehicle Routing Problem with Heterogeneous Fleet and Time Window (VRPHFTW) that will be solved using one of meta-heuristics algorithm which is Two Phase Tabu Search Algorithm to minimize travel distance. In the end, the travel distance can be minimized 19.48%.

Keywords—Vehicle Routing Problem with Heterogenous Fleet and Time Window (VRPHFTW), Meta-Heuristics, Two Phase Tabu Search Algorithm.
Proposal of Product-Replenishment Policy Determination on Multi-Source Problems to Minimize Over Stock in DC PT. XYZ Area Bandung Using Mixed-Integer Programming Method
Authors: Dyah Saskia , Aurachman Rio , Santosa Budi
Published: February 2020

XYZ is one of the companies engaging in fast moving consumer goods (FMCG) sector and produce soft drinks as its main product. In supporting the product distribution to its customers, PT XYZ has several administrative offices and distribution centers (DC) which spread across each region. The DC has main function as the warehouse which has storage activity before the products are distributed. One of the DC is located in Bandung, West Java. DC Bandung itself received product shipments from three factories, such as Cibitung, Cakung and Tambun. Related to the product shipment, DC Bandung has not determined the replenishment policy, and this condition results over stock at some periods, due to the unscheduled delivery time and undetermined product quantity. This condition gives a big impact to the total inventory cost that has to be borne by DC Bandung. This research was conducted to give the proposal of product replenishment policy using mathematical model with mixed-integer programming method as one of the linear programming types, which aimed to minimize over stock and total holding cost in DC Bandung with several constraints. Mathematical modeling is involved in this research as an approximation to the real replenishment system in the DC. The results of application of the proposed method are in the form of analytical solution, such as order quantity, and reorder point of each product that will give an impact to the total unit inventory and the total holding cost in the DC. The results calculation of replenishment policy provide savings on total inventory costs as much as IDR 23,800,981.20

Keywords—Mixed-Integer Programming, Order Quantity, Over Stock, Replenishment Policy.
Co-Reflective System: Supporting Collaborative Critical Thinking and Knowledge Building
Authors: Salam Maimoona , Ibrahim Dayang Hanani Abang , Skandar Dayang Nurfatimah Awang I
Published: February 2020

Service-learning pedagogy provides practical learning experience for students by integrating community service with academic learning. However, experience is not enough, reflection on that experience is essential to produce new understanding. The concept of collaborative reflection has been recognized recently however, there is lack of research on how to structure guided collaborative reflection to view the process of knowledge building and how technologies can support it. To shed light on this issue, this study proposed a computational workflow of structured collaborative reflection which is adopted from integrated collaborative reflection model and implement a prototype (i.e. named as ‘Co-Reflective’) to proof the concept how Computer Supported Collaborative Reflection System (CSCRS) is supporting collaborative critical thinking and knowledge building. For this purpose, design science research methodology was employed in this study. The evaluation of Co-Reflective is provided where we asked our participants to evaluate their experience and give feedback about system. Based on the positive feedback of participants we conclude that Co-Reflective can effectively support for guided collaborative reflection activities to promote collaborative critical thinking and knowledge building. Implementation of Co-Reflective not only addresses the limitations of current technologies but also contribute in the body of knowledge by presenting the concept of integrated collaborative reflection model that promotes collaborative critical thinking and knowledge building.

Keywords—collaborative knowledge building, collaborative reflection, Computer Supported Collaborative Reflection System (CSCRS), service learning.
Developing Hybrid Simulation Model to Improve Road Traffic Management
Authors: Asih Hayati Mukti
Published: February 2020

Yogyakarta has increasing trends in the number of vehicles and consequently intensifying the traffic volume and will effect to higher emission and air pollution. Traffic lights duration plays a vital role in congestion mitigation in the critical intersections of urban areas. This study has objective to minimize the number of vehicles waiting in line by developing the hybrid simulation method. First of all, the MKJI and Webster method were calculated to determine the green traffic light. Then, the simulation model was developed to evaluate the number of vehicles waiting in line according to different duration of green traffic lights from MKJI and Webster method. A case study will then be provided in Pelemgurih intersection located in Yogyakarta, Indonesia for demonstrating the applicability of the developed method. The result shows that the duration of green traffic lights calculated by Webster method provides lower number of vehicles waiting in line. It is due to the short duration of green traffic light resulted by Webster method so that the traffic light cycle becomes shorter and it effects the number of vehicles waiting in line which is lower than MKJI method. The results obtained can help the generating desired decision alternatives that will important for Department of Transportation, Indonesia to enhance the road traffic management with low number of vehicles waiting in line.
Oceanography Machine Learning untuk Oseanografi Puing-puing Laut
Authors: Wibowo Ari Purno Wahyu , Amalia Endang
Published: February 2020

Indonesia adalah produsen limbah plastik laut terbesar kedua setelah Cina. Dampaknya sangat berbahaya bagi lingkungan, organisme yang hidup di laut dan manusia. Menurut rencana pemerintah Indonesia untuk mengurangi plastik limbah laut sekitar 70% pada tahun 2025, kami melakukan penelitian ini di mana pada langkah pertama kami akan bekerja sama dengan kementerian maritim untuk melihat area limbah plastik puing-puing menggunakan pembelajaran mesin. Berfokus pada lokasi-lokasi itu, langkah selanjutnya adalah mengangkut sampah plastik puing-puing menggunakan kapal sampah terdekat ke pengalihan limbah. Pada pengalihan limbah, langkah selanjutnya adalah memilah sampah plastik yang terbagi menjadi dua kategori, sampah plastik baru dan sampah plastik lama (mikro-plastik). Langkah terakhir dari penelitian kami adalah mengirimkan sampah plastik puing baru ke industri daur ulang sementara limbah plastik bekas akan digunakan sebagai campuran aspal bekerja sama dengan Kementerian PUPR di mana setiap 1 kilometer dari jalan lebar 7 meter membutuhkan 2,5 hingga 5 ton dari sampah plastik. Manfaat lain adalah limbah plastik akan membuat aspal lebih lengket yang akan membuat stabilitas aspal dan ketahanannya lebih baik.
МЕТОДОЛОГІЧНИЙ БАЗИС ДОСЛІДЖЕННЯ ПРОЦЕСІВ ГЛОБАЛЬНОЇ ЕКСПАНСІЇ ТРАНСНАЦІОНАЛЬНОГО БАНКІВСЬКОГО КАПІТАЛУ
Authors: Momot Oleksandr
Published: February 2020

Проаналізовано наукові підходи до теоретико-практичного освоєння дійсності з урахуванням основних загальнонаукових методів, що застосовуються в економічних дослідженнях. Представлено умовну схему ітераційного процесу дослідження складної системи. З’ясовано термінологічний апарат синергетики. Розкрито зміст синергетичного підходу. Представлено в графічному вигляді еволюційний рух дисипативної системи. Охарактеризовано процеси коеволюції елементів відритої системи. Надано характеристику сучасних банківських систем та діяльності транснаціональних банків із позицій синергетично-сітьового підходу. На цій підставі ідентифіковано методологічні домінанти дослідження глобальної експансії транснаціонального банківського капіталу.
Coinfecção da Hepatite B e Delta na Amazônia: Artigo de atualização
Authors: Costa Paula Lavigne de Sousa , Andrade Monique Almeida Hingel de , Silva Victor Vieira , Costa Ana Carolina Cunha , Silva Ayumi Miura Fialho da , Oliveira Poliana da Silva , Pantoja Caroline Lobato , Brito Ana Paula Santos Oliveira , Garcia Hamilton Cezar Rocha , Carneiro Andrey de Almeida
Published: February 2020

Objetivo: Discutir os achados na literatura referentes a coinfecção Hepatite B e Delta na Amazônia. Métodos: Os dados foram coletados mediante revisão da literatura com base no PRISMA, a partir dos descritores “Coinfecção”, “HBV”, “Hepatite B”, “Hepatite D” e “Amazônia”, publicados no Scielo, Lilacs, MedLine e Pubmed. O estudo foi realizado mediante a análises de artigos originais e de revisão on-line nos idiomas português, espanhol e inglês nos últimos 5 anos. Como critério de exclusão foram estabelecidos artigos repetitivos, além de artigos não pertinentes à busca dos descritores. Resultados: Coletou-se 30 artigos científicos, nos quais 12 estavam dentro dos critérios de exclusão e 18 trabalhos nos de inclusão. Os quais apontam que ambos os vírus são transmitidos, principalmente, por via sexual. Quanto à variabilidade genética, o HBV possui oito genótipos bem característicos. A clínica é variada, havendo a necessidade de o HDV ter a presença do HBV para o curso da doença. O interferon peguilhado é a melhor escolha terapêutica. Além disso, novos medicamentos estão sendo desenvolvidos visando um tratamento mais acessível e eficaz. Conclusão: A literatura brasileira acerca da co-infecção do vírus da hepatite B e D carece de estudos de melhor evidência, evidenciando a necessidade de novas pesquisas.