Kalimantan Barat Research Articles

English Teachers’ Perspectives towards the Implementation of Differentiated Instruction in the Classroom

This study aims to explore the perspectives of junior high school English teachers in Kalimantan Barat on the implementation of differentiated instruction (DI) in culturally and linguistically diverse classrooms. Using a descriptive survey method, data were gathered from 108 teachers through a validated closed-ended questionnaire. The findings reveal that while teachers generally possess a strong understanding of DI and hold positive beliefs about its effectiveness, its application varies, particularly in addressing students' readiness, interests, and learning profiles. Key barriers include limited resources, large class sizes, and insufficient administrative support. The study highlights the need for targeted professional development and resource allocation to support DI implementation. Recommendations include improving training programs and increasing support from school administrations. Limitations of the study include a focus on one geographic region, which may limit the generalizability of the findings. These insights are relevant for enhancing DI practices in similarly diverse educational settings.

Evaluation of the Drainage Channel Capacity of Air Ukah in Ngabang

Flooding in Ngabang, Landak Regency, Kalimantan Barat often results from high rainfall, urban expansion, and limited drainage. This study analyzes the Air Ukah drainage system, including primary, secondary, and tertiary channels, to assess current capacities against projected rainfall intensities. Hydraulic and hydrological analyses were performed using primary field data and validated rainfall records from 1999-2020. Findings reveal that the existing drainage, with the primary channel’s 5.20 m³/s capacity, the secondary channel at 0.36 m³/s, and tertiary channels at 0.82 m³/s, cannot accommodate maximum discharge, particularly for a 100-year return period rainfall of 114.27 mm/hour. To address this, channels were expanded: the primary channel was widened to 6.5 m and deepened to 3.5 m, increasing its capacity to 11.83 m³/s. The secondary and tertiary channels were similarly upgraded, now accommodating 2.40 m³/s and a cumulative 34.07 m³/s. These modifications significantly enhance drainage capacity, preparing Ngabang to handle intense rain events and mitigating flood risks, particularly in urban areas. This upgraded system now meets the need for resilience against extreme rainfall, ensuring improved water management and community safety.

PLANNING FOR THE DEVELOPMENT OF A DRINKING WATER DISTRIBUTION SYSTEM NETWORK IN SUNGAI PINYUH

The increasing water demand due to population growth and territorial expansion has significantly outpaced the natural water supply in Sungai Pinyuh, Kalimantan Barat. This sub-district, part of the Mempawah Regency, faces challenges such as insufficient access to clean water, deteriorating pipe infrastructure, and environmental pollution affecting water quality. To address these issues, a study has been undertaken to plan a comprehensive development of the drinking water distribution system in Sungai Pinyuh, guided by the Regional Regulation of Mempawah Regency No. 3 of 2014. The planning utilizes EPANET software, a tool developed by the U.S. Environmental Protection Agency (EPA), which allows for the simulation of dynamic conditions in the water distribution system. EPANET helps create detailed maps of the pipe network, determine pump and reservoir locations, and specify pipe characteristics. The software’s ability to simulate various scenarios, such as changes in demand or disruptions, is crucial for ensuring a reliable water supply. The analysis incorporates primary data from field observations and secondary data from population statistics and existing water supply documents. The proposed distribution system will employ HDPE pipes of various diameters and a pump with a capacity of 200 L/s and a head of 5 meters. Simulation results indicate that the system's velocity, ranging from 0.3 to 0.72 m/s, and other parameters, such as head loss and pressure, are within acceptable limits. Additionally, reservoir capacity planning is based on the maximum daily water demand, with a calculated capacity of approximately 3,347.839 m³ to ensure adequate supply. This study provides a strategic framework for improving the drinking water distribution system, addressing current deficiencies, and preparing for future needs.

Clustering of Regencies in Kalimantan Barat Based On Community Welfare Indicators

Clustering of Regencies in Kalimantan Barat Based On Community Welfare Indicators

The Role of Regional Development Banks (BPD) In Enhancing Community Welfare: A Case Study in West Kalimantan

Regional banks, known as Bank Pembangunan Daerah (BPD), play a vital role in regional economic development in Indonesia, particularly in supporting micro, small, and medium enterprises (UMKM) and various local development programs. This study focuses on the BPD in West Kalimantan, examining its contribution to economic development and community welfare. Utilizing a literature review methodology, we analyzed various studies and data from 2010 to 2017, highlighting the performance and impact of Bank Pembangunan Daerah Kalimantan Barat (Bank Kalbar). The findings reveal significant growth in Bank Kalbar's assets, third-party funds, and credit disbursements, reflecting its commitment to supporting UMKM. Additionally, the bank’s initiatives in sustainable finance, corporate social responsibility (CSR), and inclusive finance have enhanced local economic development and social infrastructure. Programs aimed at promoting technopreneurship, financial inclusion, and environmental sustainability have bolstered community welfare, demonstrating the bank's role in improving living standards and environmental conservation. The study underscores the importance of Bank Kalbar’s role in providing financial services and support for local communities, contributing to economic resilience and poverty alleviation in West Kalimantan. Furthermore, the research highlights challenges faced by BPDs, including the need for better regulatory support and operational efficiency. The study concludes with recommendations for optimizing the role of BPDs in sustainable development, emphasizing the importance of effective governance, risk management, and community engagement to enhance their impact on regional development and welfare.

OPTIMIZATION SCHEDULING PROJECT REHABILITATION BUILDING AND HALL DEKRANASDA AND KALIMANTAN BARAT MUSEUM FENCE USING CRITICAL PATH METHOD (CPM)

This study investigates the optimization of project scheduling using the Critical Path Method (CPM) in construction projects. Focusing on the Building Rehabilitation Project, Dekranasda Hall, and Kalimantan Barat Museum Fence, the research aims to reduce project duration without altering costs. CPM is employed to map out activities in a network, identifying the critical path to enhance time management. The initial project duration was 249 days. By breaking down work items and increasing the number of workers in critical activities, the duration was reduced to 125 days. Optimization involved dividing tasks into manageable segments and determining the appropriate workforce through trial and error. The study demonstrates that effective project scheduling and resource allocation can significantly reduce completion time, highlighting CPM's value in project management for achieving efficiency and meeting deadlines. The findings emphasize the importance of detailed planning, dependency logic, and continuous monitoring to optimize construction project timelines.

Biological activities and metabolomic profiles of extracts from the marine sediment bacterium Nocardiopsis alba DP1B cultivated in different media

The soil bacterium DP1B was isolated from a marine sediment collected off the coast of Randayan Island, Kalimantan Barat, Indonesia and identified based on 16S rDNA as Nocardiopsis alba. The bacterium was cultivated in seven different media (A1, ISP1, ISP2, ISP4, PDB, PC-1, and SCB) with three different solvents [distilled water, 5 % NaCl solution, artificial seawater (ASW)] combinations, shaken at 200 rpm, 30 °C, for 7 days. The culture broths were extracted with ethyl acetate and each extract was tested for its antimicrobial activity and brine shrimp lethality, and the chemical diversity was assessed using thin-layer chromatography (TLC), gas chromatography (GC), and liquid chromatography-mass spectrometry/mass spectrometry (LC-MS/MS). The result showed that almost all extracts showed antibacterial but not antifungal activity, whereas their brine shrimp toxicity levels vary from high to low. The best medium/solvent combinations for antibacterial activity and toxicity were PC-1 (in either distilled water, 5% NaCl solution, or ASW) and SCB in ASW. Different chemical diversity profiles were observed on TLC, GC-MS, and LC-MS/MS. Extracts from the PC-1 cultures seem to contain a significant number of cyclic dipeptides, whereas those from the SCB cultures contain sesquiterpenes, indicating that media and solvent compositions can affect the secondary metabolite profiles of DP1B. In addition, untargeted metabolomic analyses using LC-MS/MS showed many molecular ions that did not match with those in the Global Natural Products Social Molecular Networking (GNPS) database, suggesting that DP1B has great potential as a source of new natural products.

The Effect of Pre-Questioning and Skimming Techniques on Students' Reading Comprehension Achievement of Narrative Text

In teaching and learning reading in English, the comprehension towards the material is the main goal. The reality shows that the majority of the students encounter many problems in comprehending English texts. This research aims to figure out the effectiveness of pre-questioning and skimming techniques on students’ reading comprehension achievement on narrative text. The research was conducted quantitatively with quasi experimental as the design for the research. The samples were two classes with each class consist of 20 students, the Twelfth Grade Students of Senior High School Darussalam Sengkubang, Kalimantan Barat, and Indonesia. The writer used t-test to analyze the data. The writer put side by side the scores between the divided two classes, experimental class and control class. Based on the calculation, it was found that tcount value is 2.1253 and ttable value is 1.99947. The result of the data showed that the score of the experimental group was 76 and the control group was 72. The findings indicated that that Pre- questioning technique and Skimming techniques gave positive effect on students’ reading comprehension achievement. Base on this research, the teachers can use pre-questioning and skimming techniques when they teach because it was effectively to use when teaching on students’ reading comprehension.Keywords: effect, pre-questioning technique, skimming technique, reading comprehension achievement, narrative

Dominant species of squid in the waters of Western Kalimantan and Northern Java identified by DNA barcoding method

Squid resources in Indonesia have high economic value, and their exploitation tended to increase due to declining fish resources in many waters. Previous research mentioned that 21 squid species were identified in Indonesian waters. However, many researchers argued that the identification of cephalopod morphology, especially squids, was challenging, and that is why supporting methods were needed, one of which was DNA analysis. The study aimed to determine the type and distribution of squid in the western waters of Kalimantan and northern Java using the DNA barcoding method on the COI gene. Squid samples were collected from six locations, consisting of Tanjung Pinang, Bangka Belitung (Babel), Kalimantan Barat (Kalbar), Muara Angke, Pekalongan, and Lamongan. The analysis results showed that Uroteuthis chinensis was present in all sampling locations except Tanjung Pinang, where Uroteuthis edulis and U. sibogae were found. The results of this study are very important in the management of squid resources because they can contribute to the sustainable management of marine resources and the maintenance of the sustainability of marine ecosystems.

Lepidothelphusa menneri n. sp. (Crustacea: Brachyura: Gecarcinucidae), first record of the genus from Kalimantan, Indonesia.

The gecarcinucid freshwater crab genus, Lepidothelphusa Colosi, 1920, is known only from Sarawak in northern Borneo, with six recognised species i.e. Lepidothelphusa cognettii (Nobili, 1903); L. flavochela Grinang & Ng, 2015; L. limau Grinang & Ng, 2015; L. loi Grinang & Ng, 2015; L. padawan Grinang & Ng, 2015; and L. sangon Grinang & Ng, 2015. The genus is now reported from Indonesian Borneo for the first time, from specimens recently collected from Gunung Kelam in Sintang Regency, Kalimantan Barat Province. Lepidothelphusa menneri n. sp. has a very distinctive tri-coloured pattern in life, unique among congeners. It can also easily be separated from congeners by carapace, epistome, male pleonal and male first gonopod characters.

Design of floating treatment wetland in PT Antam Tbk UBP Bauksit Kalimantan Barat

The wastewater that comes from bauxite ore washing at PT ANTAM Tbk UBP Bauksit Kalimantan Barat is not treated optimally, because of that it needs another alternative treatment other than coagulant. This research aims to establish the design of floating treatment wetland, arrange the application and maintenance procedure of floating treatment wetland, and arrange the draft cost budget of floating treatment wetland. The result of this research is design of floating treatment wetland plan that has 24 m2 or 4 x 6 m dimension with 600 plants for 1 unit. The selected plant is eleocharis dulcis which is able to absorb iron (FE) that contained in wastewater. Based on calculation if FA (bouyant force) higher than W (weight), than the media will be floated. All the design criteria from hydraulic loading rate, hydraulic retention time, water depth and surface coverage are accordant. The procedure of application and maintenance includes preparation and application procedure as well as operational and maintenance procedure. The cost required for 124 floating treatment wetland units is IDR 1.162.996.000.

Analysis of Determining Geoid Height Values in Urban Areas

Floods have a significant impact on human life. To reduce the risk due to flooding, mitigation is needed. Mitigation can be done when information about the flood model has been mapped. Flood modeling requires primary data in height values with reasonable accuracy. The essential data can be obtained through INAGEOID2020. INAGEOID2020 cannot be used optimally due to a lack of information regarding its accuracy. The validation process has been carried out on 5 (five) significant islands. One is the island of Borneo, which focuses on the Kalimantan Barat and Kalimantan Timur Provinces. In the two provinces, the accuracy of 5.88 to 6.43cm. There is no information about the accuracy of INAGEOID2020 in the Kalimantan Selatan Province. So, it is necessary to validate INAGEOID2020 in that province. So, validation activities are needed to get the accuracy of INAGEOID2020 in Kalimantan Selatan. Research requires two types of data, namely primary and secondary data. Preliminary data was obtained by carrying out GNSS observations. In addition, measurements of height differences between validation points were also carried out. In addition, terrestrial gravity data is needed at the validation point as a corrector value for height difference measurements. Secondary data was obtained from the Geospatial Information Agency as validation point gravimetric undulation values. Before carrying out the INAGEOID2020 validation, a geometric undulation calculation must be carried out by utilizing the leveling and GNSS data calculation results. This article shows that the geometric undulation standard deviation value results are 0.368 m, and the RMS value is 0.336 m.

Preliminary study on the man-made habitat of Utricularia gibba L. in the tropical peatland environment

Utricularia gibba L. is a free-floating aquatic carnivorous plant found in some parts of the world, including Asian tropical regions. However, data on water’s physical and chemical properties for the ecology of this species in Asian tropical peatland environments are underrepresented in the literature. Here, we reported water physical and chemical properties for the habitat of U. gibba occurring in the tropical peatland of Kalimantan Barat, Indonesia. The study site is on the man-made water canal in Jalan Parit Haji Muksin II, Kubu Raya Regency, Kalimantan Barat. We measured temperature, electrical conductivity (EC), Total Dissolved Solid (TDS), pH, Dissolved Oxygen (DO), total nitrogen, total phosphorus, nitrates, and nitrite of the waters at three points along the water canal where the bladderworts occur. The results showed that U. gibba inhabits waters with low conductivity (< 66 µS cm-1), low TDS (< 32 ppm), acidic (< pH 6), low DO (< 8 mg L-1), but higher total nitrogen (7.02 – 19.4 mg L-1), total phosphorus (0.86 – 1.71 mg L-1), nitrates (3.01 – 4.06 mg L-1) and nitrite (3.53 – 5.18 mg L-1). These findings demonstrate that U. gibba in tropical peatland environments reportedly occurs in acidic (pH 5.03 – 5.29) but relatively high nutrient habitats compared to its counterpart and other species found elsewhere.

Unveiling the close relationship between Betta burdigala and Betta uberis through DNA barcoding based on COI Gene

A Wild Betta burdigala is only known from Bangka Island, while a Wild Betta uberis resides in Kalimantan Tengah and Kalimantan Barat in Indonesia. Both species share numerous physical characteristics, particularly in the meristic count, body color, and specific habitat. In this study, we estimate the degree of similarity between Betta burdigala and Betta uberis using DNA barcoding based on the Cytochrome Oxidase Sub Unit I (COI) gene. The COI gene is a unique and small gene which found in mitochondrial DNA and is used in the DNA barcoding approach to identify species. This approach allows for the analysis of species similarities and the learning of the evolutionary histories of those species. Based on the COI gene, Betta burdigala and Betta uberis have a close genetic distance and a DNA similarity of 96.66%, much higher than other bettas. They differ by eight nucleotide bases, and their genetic distance is 0.04, while a genetic distance between 0.010 and 0.099 is considered to be low and indicative of high similarity. According to the phylogenetic tree, these species are descended from a single, closely related ancestor on the same branch. Based on the COI gene, we assume that they are identical. Additionally, we advise conducting additional research using the mitochondrial DNA complex and in-depth morphological examination to confirm the accuracy of the study’s findings.

Smart Parenting dalam Membentuk Karakter Anak pada Era Digitalisasi di Kabupaten Kubu Raya, Kalimantan Barat

Along with the times, the role of parents in helping children's growth and development so that they grow into intelligent children becomes a responsibility that must be done. However, public awareness and understanding, especially parents, do not know how to provide good parenting to children. This can lead to undirected child behavior and a lack of stable emotions. Community Service Activities (PKM) are carried out to socialize how good and correct parenting is for children, especially children with special needs at Sekolah Luar Biasa (SLB) Ibu Bahagia, Sungai Raya District, Kubu Raya Regency, Kalimantan Barat Regency. The main target of this activity is the parents/guardians of students of SLB Ibu Bahagia. The activity plan includes socialization about parenting, education about sexual harassment, and discussion sessions. The results of this activity show an increase in the understanding of participants (parents/guardians of students) in providing proper parenting and sharing knowledge about examples of improper parenting that must be avoided.

Desain Ilustrasi Untuk Buku Ensiklopedia Catatan Perjalanan Raja Majapahit Di Kota Bakulapura

ABSTRACTHistorical stories have a moral message as a form of communication. History encyclopedia books are a visual communication medium to foster children's interest in reading. History Encyclopedia Bakulapura makes interactive children's books to improve relationships between children, parents and the general public, as well as increase children's interest in reading. The historical encyclopedia book entitled: " Desain Ilustrasi Untuk Buku Ensiklopedia Catatan Perjalanan Raja Majapahit di Kota Bakulapura" introduces letters through visual descriptions of characters and cultural history. Visual characters and cultural history in this book have a function to transfer the message. The visual meaning of historical characters and culture is analyzed using Semiotics theory by identifying visual elements and analyzing their connotative meanings. Researchers will only examine some of the main characters in the encyclopedia book. Identification of visual elements of characters and analysis of connotative meanings are presented in tabular form and translated using descriptive- interpretative techniques. Data collection techniques are carried out through literature studies and content analysis. The analysis results show that there are several visual compatibility of historical characters and culture with the characterization shown by the characters of historical encyclopedia books. The historical encyclopedia book entitled " Sejarah Ensiklopedia Bakulapura Catatan Perjalanan Kerajaan Majapahit di Kota Bakulapura Kalimantan Barat" also incorporates elements of Javanese, Dayak and Malay culture related to the daily lives of children.Keywords : History, Character, Encyclopedia.

TPACK Based: A Need Analysis for ELT Materials Development

Maintaining current levels of knowledge necessitates putting learning into daily life. Currently, the development of technology and information has been very rapid, so it is possible to carry out technology-based learning. The term "TPACK" refers to the integration of conceptual frameworks related to technology, pedagogy, and content knowledge. The aim of this study was to determine if one of Kalimantan Barat schools was prepared to use TPACK in its teaching methodology. Descriptive analysis is the research method that is implemented. The techniques used to collect the data are observation of the school's infrastructure and amenities, interviews with a number of students and one of the English teachers, and student questionnaire responses. The findings revealed that the school and teachers were not prepared to include TPACK in learning and teaching activities. Even though the students were prepared enough for TPACK-based teaching and learning, it could be difficult because the school and teachers were not prepared. The observation reveals a scarcity of learning resources. The interview findings revealed that there are impediments to the use of TPACK in teaching and learning activities, such as a lack of technological skills, difficulty adapting to existing technology, and student indiscipline while utilizing technology in learning activities. Based on the study's findings, it is possible to conclude that certain demands must still be satisfied in order to accomplish TPACK-based learning.

Oral Literature of the Migration of the Mualang Tribe in Sungai Gandal Village, Kalimantan Barat

Studies on the oral literature of the migration of the Ibanik community have been extensively conducted by scholars, including studies on the oral literature of the migration of the Mualang community, one of the Ibanik subgroups in Kalimantan Barat. In various studies, it is narrated that the Mualang community once lived in Tampun Juah. In this place, they parted ways with the Buah Kana people or the Pangau Libau people. Another story tells that they lived together with the Buah Kana people in Labai Lawai. This study is conducted through interviews to obtain new information about the oral literature of the Mualang community related to migration and patterns of shifting settlements. This study found several pieces of information similar to previous studies, but there are also differences. According to the oral literature of the Mualang community in Sungai Gandal Village, they used to live in Tampun Juah but migrated due to cases of marriage between first cousins (manal). They then moved to Labai Lawai, where they still lived together with the Pangau Libau people. Actually, in Labai Lawai, they parted ways with the Pangau Libau people, not in Tampun Juah. The Mualang community in Sungai Gandal Village experienced relocation from one area to another, usually due to cases considered taboo. This study has provided new contributions to oral literature related to the migration of the Ibanik community, particularly the Mualang community.

The Implementation of THIEVES Strategy in Teaching Reading Comprehension of Descriptive Text

This study aimed to investigate whether the THIEVES strategy is effective or not in teaching reading comprehension of the descriptive text to students in the eighth grade at SMP Negeri 2 Ketungau Tengah, Sintang, Kalimantan Barat. It also investigates how effective it is. This research is a one-group pre-test and post-test design. In this research, the total population is 36 students, 18 from VIII A and 18 from VIII B. The researchers used random cluster sampling to select 18 students from class VIII A as the research sample. The researchers also collected and analyzed pre-test and post-test data using a t-test. The average pre-test score was 52.5, while the average post-test score was 62.5. The result of the t-test was 4,41, as shown by the data. Based on the above data analysis, the null hypothesis (Ho) is rejected, and the alternative hypothesis (Ha) is accepted because the t-test was higher than the t- table (4.41&gt;1.740). Therefore, it indicated that the THIEVES strategy is effective in teaching reading comprehension. In addition, the effect size was 1,19, indicating a strong effect (&gt;1.00). In conclusion, implementing the THIEVES strategy in teaching reading comprehension of descriptive text to the eight grade students in the school is highly effective.

Islamic Boarding School Economic Empowerment through Halal Industry Development in Kubu Raya Kalimantan Barat

Islamic boarding school as one of the educational institutions in Indonesia has an important role in assisting the government in advancing the religious spirituality of the students. In addition, Islamic boarding school also play a role in community economic development, one of the Islamic boarding schools that contributes to the economy is the Muinul Islamic boarding school in Kubu Raya Kalimantan Barat. With the specifications of the halal honey kelulut industry. This research aims to describe 1) How is the halal management process for the kelulut honey industry in Islamic Boarding School? 2) What is the achievement of developing the kelulut honey industry business? 3) What are the supporting and inhibiting factors in the halal business of the kelulut honey industry? This type of research uses descriptive qualitative data collection through observation and in-depth interviews. The results of this research are 1) Halal management of the kelulut honey industry at Muinul Islamic boarding school is in accordance with halal standards set by the government. 2) The achievements of the kelulut honey industry business are a) There is a new business unit for kelulut honey farms, b) It already has business legality such as pirt permits, NIB and halal certification c) Learning media for students d) The proceeds from the sale of kelulut honey can be additional income for Islamic boarding schools 3) The supporting factors are internal (complete vegetation in Islamic boarding school environment, high entrepreneurial interest from Islamic boarding school managers and the existence of a marketing network) and external (support from government institutions and universities). The inhibiting factor is the weather in the rainy season and not increasing the amount of vegetation.&#x0D; Keywords: Islamic Boarding School Economic Empowerment, Halal Industry Development&#x0D; &#x0D;