bluuebunny/crossref_metadata_2025 huggingface dataset:
Monthly Streamflow Prediction by Metaheuristic Regression Approaches Considering Satellite Precipitation Data
Authors: Mehraein Mojtaba , Mohanavelu Aadhityaa , Naganna Sujay Raghavendra , Kulls Christoph , Kisi Ozgur
Published: November 2022

In this study, the viability of three metaheuristic regression techniques, CatBoost (CB), random forest (RF) and extreme gradient tree boosting (XGBoost, XGB), is investigated for the prediction of monthly streamflow considering satellite precipitation data. Monthly streamflow data from three measuring stations in Turkey and satellite rainfall data derived from Tropical Rainfall Measuring Mission (TRMM) were used as inputs to the models to predict 1 month ahead streamflow. Such predictions are crucial for decision-making in water resource planning and management associated with water allocations, water market planning, restricting water supply and managing drought. The outcomes of the metaheuristic regression methods were compared with those of artificial neural networks (ANN) and nonlinear regression (NLR). The effect of the periodicity component was also investigated by importing the month number of the streamflow data as input. In the first part of the study, the streamflow at each station was predicted using CB, RF, XGB, ANN and NLR methods and considering TRMM data. In the second part, streamflow at the downstream station was predicted using data from upstream stations. In both parts, the CB and XGB methods generally provided similar accuracy and performed superior to the RF, ANN and NLR methods. It was observed that the use of TRMM rainfall data and the periodicity component considerably improved the efficiency of the metaheuristic regression methods in modeling (prediction) streamflow. The use of TRMM data as inputs improved the root mean square error (RMSE) of CB, RF and XGB by 36%, 31% and 24%, respectively, on average, while the corresponding values were 37%, 18% and 43% after introducing periodicity information into the model’s inputs.
Agricultural Productive Carrying Capacity Improve and Water Optimal Allocation under Uncertainty Based on Remote Sensing Data in Lancang County, Southwest China
Authors: Zhang Yunquan , Yang Peiling
Published: November 2022

Through the reasonable calculation of water resources, evaluating the irrigation carrying capacity of farmland under the constraints of water resources is crucial for optimizing the spatial distribution of agricultural production and ecology and rationally adjusting the scale of agricultural production. This paper proposes an optimization framework based on Type 2 fuzzy chance-constrained programming (T2FCCP) to solve the problem of regional water resources optimal allocation and evaluation of farmland irrigation carrying capacity under uncertain conditions. To illustrate the applicability of the proposed framework, this paper conducts a case study on Lancang County, Puer City, Yunnan Province. Methods, such as watershed harmony evaluation method, remote sensing data, and shared socioeconomic pathways (SSPs), are applied and integrated into the proposed optimization framework to systematically deal with uncertainties in water resource systems and agricultural systems. The results include the costs and benefits of regional water and soil resources systems, water resources optimal allocation, and crop planting structure results under different SSPs in Lancang County, Puer City. The results also show that the total cost under T2FCCP is about 5% lower than that under fuzzy chance-constrained programming (FCCP) and about 17% lower than that under chance-constrained programming (CCP). By 2025, the water resources carrying capacity of different tributaries in Lancang County, Puer City will increase, and based on the evaluation results of agricultural production irrigation carrying capacity, suggestions are given to ensure agricultural production carrying capacity.
Decision Support Tools for Water Quality Management
Authors: Quinn Nigel W. T. , Dinar Ariel , Sridharan Vamsi
Published: November 2022

The sustainability of inland water resources worldwide is becoming increasingly endangered as climate change contributes to the human-induced problems of water supply scarcity and maldistribution [...]
Copepod Assemblages at the Base of Mangrove Food Webs during a Severe Drought
Authors: Campos Carolina Coelho , de Sousa Barroso Hortência , Belmonte Genuario , Rossi Sergio , Soares Marcelo Oliveira , Garcia Tatiane Martins
Published: November 2022

The effect of severe drought on the functional groups that sustain the base of the mangrove food webs in semi-arid areas is largely unknown. We therefore analyzed the intra-annual variation in the assemblages and functional groups of copepods in a shallow, low-inflow estuary of the Brazilian semi-arid coast when the most severe drought ever occurred. The lowest density was found in April (upstream region) and the highest in August (downstream region). Three main functional groups were identified, sorted by spawning strategy, and further subdivided according to feeding strategy, trophic regime, and diel vertical migration behavior. The community was significantly influenced by the extreme drought period, presenting a temporal homogenization in terms of composition, and an expressive and unexpected increase in density in the dry period, possibly due to phytoplankton blooms resistant to hypersalinity and the occurrence of copepod species adapted to stressful conditions. The few stress-tolerant species sustaining the food webs with seasonal variations were observed simplifying the trophic variability. The results indicate that hypersalinity can induce changes in the zooplankton community, increasing copepod mortality risk and, so, promoting alteration in the trophic estuarine dynamic.
Ecosystem Services and Vulnerability Assessments of Seagrass Ecosystems: Basic Tools for Prioritizing Conservation Management Actions Using an Example from Thailand
Authors: Kaewsrikhaw Ratchanee , Upanoi Tipamat , Prathep Anchana
Published: November 2022

Seagrass habitats are among the most valuable coastal ecosystems. They provide a wide array of ecosystem services (ES) that support the livelihoods of many people. However, seagrass habitats worldwide are at risk of being lost due to the alteration of coastal areas by many causes. Seagrass meadows around Thailand were assessed to evaluate their ecosystem services and vulnerability (VU) status. The ES and VU analyses could be used as basic tools to assess the status of individual seagrass meadows and to prioritize the action needed among several meadows. From 82 seagrass sites, the ES of seagrass habitats tended to be varied based on the areas of the seagrass beds. The vulnerability of the seagrass habitats was mainly influenced by the threat of boating accidents and the incidence of sedimentation. The final combined analysis suggested that a seagrass site at Ban Don (BD), in Surat Thani Province, should be the priority for intervention due to the importance of the ES provided at the site and the existence of a degree of threat from poor land-use management. This work allows us to understand more about the targeted management of seagrass ecosystems, which is very important for conservation and restoration because of its significant potential carbon offset.
Geochemical Characterization of the River Waters in the Pumqu Catchments, Central Himalayas
Authors: Yang Yang , Chen Hulin , Renzeng Lamu , Huang Xiang
Published: November 2022

Pumqu is the biggest river in the Qomolangma National Natural Reserve in China. It is one of the headwaters of the river Ganges and is an important international river in southern Tibet Autonomous Region (T.A.R). However, there are a lack of systematic studies on Pumqu’s geochemical properties. In this study, water samples were collected systematically from all the river catchments in different seasons in 2021, the spatiotemporal variations of the geochemical characteristics of the catchments and their controlling factors were studied, and the overall water quality of the river was also evaluated. Overall, the results showed that the water from the Pumqu catchments was slightly alkaline, with an average pH of 8.22. The number of total dissolved solids was comparable to the other rivers on the Tibetan Plateau and showed a similar variation over the year. Affected by the natural geothermal spring water discharge, the values of oxidation reduction potential at some sampling sites were negative in the wet season. Generally, Ca2+ and HCO3− were the dominant ions. Carbonate weathering was the main factor affecting the geochemical features of the studied catchments. The results of correlation analysis showed the influence of rock weathering, glacial meltwater, geothermal water discharge and riverine physicochemical processes on the trace elements. The natural geothermal water discharge was particularly responsible for the elevated Li, which appeared in some of the sampling sites and resulted in relatively high WQI values in the sites. The overall water quality of the Pumqu catchments was excellent. This study provides first-hand information on the overall spatial and temporal span of the physicochemical characteristics and water quality of all the catchments of the river Pumqu, one of the major water systems in the central Himalayas.
Analysis of the Evolution Pattern and Driving Mechanism of Lakes in the Northern Ningxia Yellow Diversion Irrigation Area
Authors: Ding Xueqi , Zhang Haitao , Wang Zhe , Shang Guoxiu , Huang Yongzeng , Li Hongze
Published: November 2022

In the northern part of the Ningxia Autonomous Region, there are rich lake resources, which are known as the “South of the Seas”. In recent years, the natural evolution of the water system and human activities have caused significant changes in the lake area. In order to fully understand the evolution of lakes in the northern Ningxia Yellow Irrigation Area, Landsat, Sentinel-2 images and ArcGIS were used to extract relevant information, and the cumulative distance level curve and Mann–Kendall trend analysis were used to analyze the trends of each driving factor in depth. The results showed that (1) the lake surface area in the northern Yellow Diversion Irrigation Area showed a significant increasing trend from 1986 to 2019. (2) The annual average temperature in the Ningxia Yellow River Irrigation Area has shown an increasing trend over the past 39 years, and no year has obvious cyclical changes, but in 1998, there was a sudden change in temperature and the temperature began to rise sharply; the annual average precipitation showed an increasing trend with a large variation, and the annual average precipitation from 1980 to 2018 showed a fluctuating increasing trend. (3) There is no significant linear pattern of runoff from upstream during 1986–2015, and it is characterized by fluctuating changes; the precipitation in the Yellow Irrigation Area is much lower than the average level in Ningxia, and it is classified as a typical arid area; the water consumption is all decreasing, but its linear trend is not significant; the most significant impact of the change in the substratum on the water surface is the construction of fields around the lake after 1990, followed by the Lake engineering treatment. (4) The water surface area of the mainstream is significantly and positively correlated with the incoming water from upstream, is significantly and negatively correlated with the area of grassland, and is significantly and positively correlated with the areas of arable land and construction land. The effect of land cover on the water surface area of the mainstream is lower than that on the water surface area other than the mainstream.
Lake Changes during the Past Five Decades in Central East Asia: Links with Climate Change and Climate Future Forecasting
Authors: Yang Yongheng , Wu Jie , Miao Yunfa , Wang Xuelian , Lan Xiaoyu , Zhang Ziyue
Published: November 2022

As one of the most important reservoirs of water in arid regions, lakes experience a series of complicated changes. However, the natural driving mechanisms behind such changes remain unclear. In this study, we collected data from 1333 lakes in the arid region of Central East Asia (CEA) to investigate the underlying natural causes of lake changes over the past five decades. The lakes were located within three different geomorphological zones: (I) Tibetan Plateau zone; (II) high mountain—basin zone; and (III) low mountain zone. Our results show that lakes as a whole in CEA exhibit a unique change trend, with an overall lake area increase of 7099 km2 (41%) and with heterogeneous spatial variations over the past five decades. The lake area increase was 6236 km2 (47%), 935 km2 (31%) and decrease was 72 km2 (~1%) in zones I, II, and III, respectively. The different geomorphological zones have influencing factors. In zones I and II, increased precipitation (including cloud water) and temperature rise (causing glacier, frozen soil, and snow melt) contributed to approximately 66% of the change in lake area; in zone III, changes in precipitation contributed to approximately 87% of the lake changes. Increased atmospheric circulation of water vapor caused by warming of the ocean surface appears to be the main driving factor of these changes; this is supported by future projection scenarios. From 2006 to 2098, temperature and precipitation will increase by 4.0–7.8 °C and 1.07 to 1.29 mm per day, respectively, under both the RCP4.5 and RCP8.5 scenarios. Notably, although the climate appears to have become more optimum for lakes in CEA at the interdecadal timescale, short timescale climatic events such as lake expansion will bring more extreme climate events, such as extreme high-temperature heat waves, which should be considered as a potential threat to lake ecology in the future.
Recurrence following transanal total mesorectal excision for rectal cancer: a monocentric retrospective series of technically difficult cases
Authors: Frigault Jonathan , Morin Geneviève , Drolet Sébastien , Bouchard Philippe , Bouchard Alexandre , Ngo Thanh-Quan Philips , Letarte François
Published: November 2022

Purpose: Transanal total mesorectal excision (TaTME) has been proposed to overcome surgical difficulties encountered during rectal resection, especially for patients having high body mass index or low rectal cancer. The aim of this study was to evaluate oncologic outcomes following TaTME.Methods: This retrospective study included all consecutive patients with rectal cancer who had a TaTME from 2013 to 2019. The main outcome was the incidence of locoregional recurrence by the end of the follow-up period.Results: Among a total of 81 patients, 96.3% were male, and their mean age was 63±9 years. The mean body mass index was 30.3±5.7 kg/m2, and the median distance from tumor to anal verge was 5.0 cm (interquartile range [IQR], 4.0–6.0 cm). Most patients had a low anterior resection performed (n=80, 98.8%) with a diverting ileostomy (n=64, 79.0%). Distal and circumferential resection margins were positive in 2.5% and 6.2% of patients, respectively. Total mesorectal excision was complete or near complete in 95.1% of patients. A successful resection was achieved in 72 patients (88.9%). After a median follow-up of 27.5 months (IQR, 16.7–48.1 months), 4 patients (4.9%) experienced locoregional recurrence. Anastomotic leaks were observed in 21 patients (25.9%). At the end of the follow-up, 69 patients (85.2%) were stoma-free.Conclusion: TaTME was associated with acceptable oncological outcomes, including low locoregional recurrence rates in selected patients with low rectal cancer. Although associated with a high incidence of postoperative morbidities, the use of TaTME enabled a high rate of successful sphincter-saving procedures in selected patients who posed a technical challenge.
NON-EQUILIBRIUM AND NONLINEAR PROCESSES IN SURVIVABILITY POTENTIAL EVALUATION OF REINFORCED CONCRETE STRUCTURAL SYSTEMS: ANALYTICAL REVIEW
Authors:   Orel State University named after I.S. Turgenev, ANDROSOVA N.B. ,   Scientific and Research Institute of construction physics of RAASN
Published: November 2022

A review of scientific research related to the limitation of the right to life of reinforced concrete structural systems, taking into account incompatible and non-linear processes. Particular attention in the scientific review is devoted to the analysis of the work necessary to study the use of concrete and reinforced concrete building structures of buildings and structures. The fundamental phenomenological theory of creep is systematized and given from the classification. The significance of the proposed scientific review lies in the fact that there is a high value and transience of phenomenological theories of concrete creep, primarily for the calculation of reinforced concrete structural systems, taking into account non-equilibrium heavy and nonlinear processes.
STRENGTH OF MONOLITHIC REINFORCED CONCRETE SLABS FOR PUNCHING UNDER STATIC AND DYNAMIC LOADING
Authors:   National Research Moscow State University of Civil Engineering, TREKIN N.N. , SARKISOV D.Y. ,   Tomsk State University of Architecture and Building, KRYLOV V.V. ,   National Research Moscow State University of Civil Engineering, EVSTAFIEVA E.B. ,   LLC «Scientific Design Bureau «Constructive Solutions», ANDRIAN K.R. ,   JSC «Central Research and Design and Experimental Institute of Industrial Buildings and Structures – TsNIIPromzdaniy»
Published: November 2022

Modern design standards of developed countries have significant differences in the design provisions for determining the bearing capacity of monolithic reinforced concrete slabs for punching and do not fully take into account the features of design solutions and operating conditions. The available design positions are designed for the static loading mode of structures. The stress-strain state of plates for punching under dynamic load is currently little studied, and as a result, there are no methods for determining the bearing capacity of plates for punching under dynamic loading. The article presents the results of experimental and theoretical studies of the bearing capacity of plates under static and dynamic loads. The methodology of experimental studies and the design of prototypes, equipment for conducting power tests are described, the results of studies on the penetration of fragments of the interface of flat reinforced concrete monolithic slabs with a column under dynamic and static loading are presented. A comparison of the destructive load for samples tested under dynamic loading with the destructive load for samples tested under static load is presented. The factors affecting the strength of the plates during punching under dynamic loading are determined. Proposals have been developed to improve the methodology for calculating the strength of flat reinforced concrete slabs when pushing through static and dynamic loads.
Toxicity of Selected Pesticides to the Snakehead, Channa punctata
Authors: PERSCHBACHER P.W. , SARKAR J.
Published: November 2022

Bioassay trials conducted in triplicate determined 24-hour and 48-hour LC100 values to the snakehead, Channa punctata, of Sumithion (fenitrothion), DDVP, Phyphanon (malathion), dieldrin and Phostoxin (phosphine). Two recommended piscicides, bleaching powder and rotenone, were also evaluated for cost comparisons. The 24-hour LC100 values ranged from 15 ppm of bleaching powder to 0.25 ppm of Phostoxin. Detoxification of Phostoxin, as determined. by survival of carp fry, occurred in 4 days in laboratory tanks at 23°C and in 1 day in earthen ponds at 30 °C. Rotenone required 6 days at 2.5 ppm and bleaching powder 17 days at 15 ppm to detoxify in laboratory tests at 23°C. Indian-produced phosphine was of least cost for fish eradication, followed by dieldrin, Phostoxin, and bleaching powder.
Editorial: ‘multi-’
Authors: Freschi Federico
Published: November 2022

After a hiatus caused by the successive lockdowns of the Covid pandemic in 2020, Junctures 22 returns with a full issue that amply lives up to the journal’s mission of encouraging discussion across boundaries, whether disciplinary, geographic, cultural, social, or economic. The call for submissions invited contributors to reflect on how the notion of ‘multi-’ could prompt the ability to perceive the world in new ways, to reveal new truths that are hidden in plain sight, to make connections between seemingly unrelated phenomena, and to generate solutions. This invitation was prompted by the assertion that as the world around us becomes increasingly complex and as the tensions between technological advancement and environmental degradation increase, solutions for a sustainable future are only going to be found through collaborative approaches that are open to paradigms and knowledge systems that are other than those that have sustained the status quo.
Transdisciplinarity in the Dunedin Art+Science Project
Authors: McKinlay Pam
Published: November 2022

In confronting the realities of the global climate crisis, it seems as if we are living in a narrow window of “useful consciousness.” Responding to and tackling the existential threat of the climate crisis requires transdisciplinary methodologies and cooperation. A series of multidiscipline art and science collaborations in Dunedin, New Zealand, focuses a lens on rapidly changing ecological and social effects as human activity encroaches on our planetary boundaries. Our approach allows for processing of the scientific data in bite-sized, digestible chunks and provides a means for storytelling through visual texts and narrative spaces – a methodology essential to connecting with community values and finding solutions to climate anxieties.
Between Democracy and Technocracy:
Authors: Chu Leo
Published: November 2022

This paper investigates the circulation of ecological knowledge and practices between North America and Southeast Asia via ecologists’ involvement in the politics of science during the Transpacific Cold War. Historians have documented how American scientists in the early Cold War (1945–1965) faced the contradiction between their apparent ‘freedom’ to conduct research compared to scientists in socialist countries, on the one hand, and the imperative to depoliticise the connection between their research and the military-industrial complex, on the other hand. Historians have also shown how the environmental, civil rights and antiwar movements severely challenged this apolitical science by the late 1960s. The popularisation of ecology and its convergence with environmental politics after the 1970s are often viewed as part of this trend of repoliticising science in North America.
Human Development and the Business Model Impact of Bitcoin Transactions
Authors: Saputro Janu Ilham , Rahmadani Ade Agung , Sriyono Diaz Mauludin , Yuliyanto Hizkia , Silaban Nia Adelina
Published: November 2022

This essay provides characteristics of three emerging business models to comprehend the logic and importance of business model design about the impact of bitcoin transactions on human development. This essay argues that a business model is a social construction that describes how value is produced, and that value production requires human agency. The creation of value through a human agency is demonstrated by the use of bitcoins. Some businesses are changing how they conduct business as a result of the decentralization of financial transactions in a global internet information architecture. The highest volume of cryptocurrency exchanged to date, bitcoin, is supported by this infrastructure. It seems that bitcoin is having an impact on new company models. However, little is known about the development of these models and their implications. This paper provides a theoretical framework for understanding the logic and worth of business models about the use of bitcoin and human agency. It examines the impact of bitcoin transactions on human development. The results show that where people have access to the internet, there is a favorable association between bitcoin transactions and human development. Cluster analysis is used to analyze the logic and value of business model design from the bitcoin effect based on various variables. The evolving paradigms that each of these nations represents are divided into three groups. This paper's contribution is to reveal the bitcoin effect, which is evident in the new business models it makes possible. Based on the logic of its design, this can be used as a lens to analyze the value produced by a bitcoin business model.
GENDER INEQUALITY ANALYSIS OF THE MAIN FEMALE CHARACTER IN NIKI CARO’S MULAN MOVIE: A FEMINISM STUDY
Authors: Hasna Afina Mirrah , Rahayu Endang Yuliani
Published: November 2022

This research is focused on feminist studies. It is further discussing gender inequality reflected in Mulan, the impact of gender inequality in Mulan and Mulan's efforts to realize gender equality. This research is based on the theory of sexual politics by Kate Millett which explains that women must be able to have masculine and feminine behavior by fighting for gender equality. This means that women must also play the role of men. On the other hand, women can only serve their husbands and raise children when they are only seen as weak figures are called sexual politics. The data of this research is taken from Mulan movie, especially from the movie script and the point of view of the female character. In chapter IV the gender inequality reflected in Mulan, the impact of gender inequality in Mulan and the efforts made to achieve gender equality are discussed referring to Kate Millett theory. The study results that this film is about gender inequality because women are considered weaker and cannot do men's work. In addition, the authors hope that research on women's struggles in the future, especially gender equality, can be carried out more often.

 

 

Keywords: Gender Inequality, Gender Equality, Feminism Study, Sexual Politics, Mulan Movie
ANALYSIS OF THE ENGLISH TEACHING WRITING METHODS USED BY THE TEACHERS DURING THE COVID-19 PANDEMIC AT EMSA SCHOOL
Authors: Pujianti Metanoia Tatag , Widyaningrum Agnes
Published: November 2022

The condition of the education system that changed from a face-to-face learning system to an online learning system as a reaction to the spread of the COVID-19 virus throughout Indonesia made this an inspiration for researchers to conduct research. Of course, given the new education system, teachers must develop efficient teaching techniques to optimize student learning. This study intends to describe the methods teachers use to teach English lessons online during the pandemic. The purpose of this study is to analyze the teachers' methods for teaching English during the COVID-19 pandemic: (1) the strategies that teacher used during COVID-19 pandemic to teaching writing, (2) the reasons of selecting those strategies. In order to create this thesis, the researcher used descriptive qualitative methods. Since the researcher completed a one- month internship at a school on October 25, 2022, the study data has been assessed.  Two English teachers from EMSA School were interviewed to gather information.The findings of this study are as follows: (1) explain various devices to tech and providing detailed instruction on how to submit the assignment, (2) explain the use of online tools as the effective way, (3) evaluating the student’s comprehension of the materials, reminding students for the schedule and using online tools to provide the assignment.

Key words: Teachers’ strategies, online learning, online platform.
FORENSIC MEDICAL DETERMINATION OF THE SEVERITY OF CHEST INJURIES WITH RIB CAGE TRAUMA
Authors: Gubin Mykola , Olkhovsky Vasil , Grygorian Edgar
Published: November 2022

Background. Closed chest trauma with rib fractures is a common injury to the external respiratory system. Victims with such an injury may be subject to forensic examination.

Purpose. The aim of the study was to determine the severity of injuries in patients with closed chest trauma with violation of the integrity of the costal skeleton, treated in a specialized surgical hospital, to establish additional criteria for forensic diagnosis of such trauma.

Subjects and Methods. 71 medical cards of inpatients, patients with chest injuries who were treated at the Kharkiv Institute of General and Emergency Surgery named after V.T. Zaitseva. A forensic medical evaluation of closed chest injuries with rib fractures was performed according to the severity of injuries according to clinical observations. Morphological and clinical approach was used to determine the severity of injuries.

Results. Severe injuries were found in 14 (19.7%) cases of injuries, mainly with the occurrence of a life-threatening phenomenon, namely acute respiratory failure. Moderate injuries were found in 57 (80.3%) cases of chest injuries with rib fractures in the absence of danger to life.

Conclusions. It is established that in the available scientific and methodological literature there are no diagnostic morpho-clinical signs for qualitative forensic assessment and prediction of the final results of closed chest injuries, there are different views on forensic assessment. It is determined that when applying the morphological and clinical approach of forensic assessment, additional diagnostic criteria for closed chest injuries, should be considered when determining the severity of injuries: dynamics and duration of recovery of post-traumatic morphological and functional changes of injured organs. or the entire respiratory system (lungs), the occurrence of life-threatening phenomena. The ways of further improvement of forensic diagnostics in the assessment of these injuries by the degree of their severity are identified.
Descriptive Learning Trajectories and Policy Simulations Using MICS6 Data
Authors: Kaffenberger Michelle , Silberstein Jason
Published: November 2022

In recent years, scholars associated with the RISE Programme have analysed learning trajectories using a variety of global datasets to shed light on the global learning crisis and diagnose what might help address it (Crouch, Kaffenberger, and Savage, 2021). For those who may want to build and analyse learning trajectories, this note acts as a methodological guide for doing so using an important new dataset on foundational learning, the Multiple Indicator Cluster Surveys Round 6 (MICS6). We have applied the methods described in this note and, in partnership with the Global Education Monitoring Report (GEMR), developed a tool to showcase the results. The resulting “Learning Trajectories” webpage serves as an interactive introduction to learning trajectories and related policy simulations, and features a flexible data explorer for those who want to conveniently build, analyse, and apply learning trajectories and policy simulations to their own work and context.
Analisis Kesalahan dalam Menyelesaikan Soal Cerita Aritmatika Sosial Ditinjau dari Kemampuan Awal Siswa
Authors: Mulbar Usman , Alimuddin Alimuddin , Ridjalu Wa Ode Nur Radhiah
Published: November 2022

This study aims to determine the description of errors, types of errors, and the causes of errors made by students in solving social arithmetic story problems in terms of students’ initial abilities. The type of research used is dercriptive research. A total of 28 students of class VII  became subjects in this study. Data was collected using written tests and interviews. The collected data were analyzed quantitatively and qualitatively. The results showed that the percentage of errors from the largest to the smallest in a row is a problem with the concept of profit, purchase price, net weight, interest, discounts and taxes. The types of errors from the largest to the smallest percentages are errors in understanding the problem, errors in completing mathematical models, errors in making mathematical models, and errors in writing the final answer to the questions. The causes of students errors are not understanding the meaning of the question, not mastering the concepts related to the problem, not mastering the steps in solving the problem, lacking mastery in the calculation process, unable to determine the next formula to solve the problem, making mistakes in the previous process, unable to write final answer, forgetting factor, and lack of practice working on the questions.
Deskripsi Pemahaman Konseptual dan Prosedural pada Materi Persamaan Garis Lurus ditinjau dari Kecerdasan Logis Matematis Siswa
Authors: Alawiya Tuti , Dinar Muhammad , Asdar Asdar
Published: November 2022

Penelitian ini bertujuan untuk mengetahui deskripsi pemahaman konseptual dan prosedural pada materi persamaan garis lurus jika ditinjau dari kecerdasan logis matematis siswa. Untuk memenuhi tujuan tersebut dilakukan jenis penelitian kualitatif yang bersifat deskriptif. Subjek dari penelitian ini terdiri dari 3 orang yakni masing-masing satu dari kecerdasan logis matematis tinggi, sedang, dan rendah siswa di kelas IX SMP. Instrumen dalam penelitian ini adalah tes kecerdasan logis matematis, tes pemahaman konseptual dan prosedural dan pedoman wawancara. Materi yang digunakan adalah materi persamaan garis lurus. Hasil penelitian menunjukkan pada pemahaman konseptual,  subjek dengan kecerdasan logis matematis tinggi mampu memahami 3 indikator, kecerdasan logis matematis sedang 4 indikator, dan kecerdasan logis matematis rendah 1 indikator. Pada pemahaman prosedural, ketiga subjek belum memahami dengan baik setiap indikatornyaKata Kunci: Konseptual, Prosedural, Kecerdasan Logis Matematis, Persamaan Garis Lurus.This study aims to determine the description of conceptual and procedural understanding on the material of straight-line equations when viewed from the logical mathematical intelligence of students. To fulfill this objective, a descriptive qualitative research was conducted. The subjects of this study consisted of 3 people, one each from high, medium, and low mathematical logical intelligence students in class IX SMP. The instruments in this study were logical mathematical intelligence tests, conceptual and procedural understanding tests and interview guidelines. The material used is straight line equation material. The results showed that on conceptual understanding, subjects with high mathematical logical intelligence were able to understand 3 indicators, moderate mathematical logical intelligence 4 indicators, and low mathematical logical intelligence 1 indicator. In procedural understanding, the three subjects did not understand each indicator well Keywords: Conceptual Understanding, Procedural Understanding, Mathematical Logical Intelligence, Straight Line Equation
Peningkatan Kualitas Pembelajaran Matematika Melalui Penerapan Model Mind Mapping dengan Bantuan Media Pembelajaran Video pada Siswa Kelas XI SMA
Authors: Minggi Ilham , Nasrullah Nasrullah , Mansur Harnita
Published: November 2022

Penelitian ini adalah penelitian tindakan kelas yang bertujuan untuk meningkatkan kualitas pembelajaran matematika siswa melalui penerapan model pembelajaran mind mapping dengan bantuan media pembelajaran video. Subjek penelitian ini terdiri dari 28 orang siswa. Penelitian ini dilaksanakan dalam satu siklus selama enam kali pertemuan. Pengumpulan data dilakukan dengan observasi dan pemberian tes. Instrumen penelitian yang digunakan adalah lembar observasi dan tes hasil belajar. Teknik analisis data yang digunakan adalah analisis kualitatif dan kuantitatif. Hasil penelitian menunjukkan bahwa persentase aktivitas belajar yang diperoleh siswa mencapai 94%. Nilai rata-rata yang diperoleh siswa adalah 81,46 dengan persentase ketuntasan klasikal sebesar 92,8%. Berdasarkan hasil penelitian yang diperoleh maka dapat disimpulkan bahwa penerapan model pembelajaran mind mapping dengan bantuan media pembelajaran video dapat meningkatkan kualitas pembelajaran matematika siswa.Kata kunci: mind mapping, aktivitas siswa, kualitas pembelajaran, video, matematikaThis study is a class action research that aims to improve the quality of student mathematics learning through the application of mind mapping learning model with the help of Video Learning media. The subject of this study consisted of 28 students. This study was conducted in one cycle for six meetings. Data collection is done by observation and giving tests. The research instruments used are observation sheet and learning result test. Data analysis techniques used are qualitative and quantitative analysis. The results showed that the percentage of learning activities obtained by students reached 94%. The average score obtained by students is 81,46 with the percentage of classical completeness of 92,8%. Based on the results obtained, it can be concluded that the application of mind mapping learning model with the help of video learning media can improve the quality of student math learning.Keywords: mind mapping, student activity, learning quality, video, mathematics
Peningkatan Pemahaman Konsep Matematika melalui Pembelajaran Berbasis Masalah pada Siswa Kelas Xi Ipa SMAN 1 Topoyo
Authors: Marpiyanti Marpiyanti
Published: November 2022

Penelitian ini adalah penelitian tindakan Kelas (Classroom action research), yang bertujuan untuk: meningkatkan pemahaman konsep matematika siswa kelas XI IPA SMAN Topoyo melalui pembelajarn berbasis masalah.  Subjek penelitian ini adalah siswa kelas XI IPA SMAN 1 Topoyo kabupaten Mamuju Provinsi Sulawesi Barat sebanyak 30 siswa, yang terdiri atas 9 laki-laki dan 21 perempuan.  Teknik analisis data yang digunakan adalah analisis data kualitatif dan analisis data kuantitatif.  Hasil penelitian menunjukkan bahwa: Penggunaan model pembelajaran berbasis masalah pada siswa kelas XI IPA SMAN  Topoyo dapat meningkatkan pemahaman konsep khususnya indikator kemampuan menyatakan ulang konsep yang telah dipelajari hal ini didindikasi dari analisis deskriptif rata-rata skor perolehan siswa sebesar 2,63 meningkat menjadi 3,63, kemampuan memberikan contoh dan bukan contoh dari konsep yang telah dipelajari hal ini didindikasi dari analisis deskriptif rata-rata skor perolehan siswa sebesar 3,2 meningkat menjadi 3,63, dan kemampuan menyajikan konsep dalam berbagai macam bentuk representase matematika hal ini didindikasi dari analisis deskriptif rata-rata skor perolehan siswa sebesar 2,73 meningkat menjadi 3,67, tetapi tidak dapat meningkatkan pemahaman konsep khususnya indikator kemampuan mengaitkan berbagai konsep (internal dan eksternal matematika);Kata Kunci : Pemahaman konsep, Pembelajaran bebasis masalah.
ANALISIS POTENSI MATA AIR DI DAERAH AIRAN SUNGAI TANGKA PROVINSI SULAWESI SELATAN
Authors: Badwi Nasiah
Published: November 2022

ABSTRAK Air adalah kebutuhan sangat dalam kehidupan, air tidak ada kehidupan akan punah. Penduduk bertambah maka kebutuhan air meningkat, dimana ketersediaan terbatas. Untuk memenuhi kebutuhn air pada musim kemarau dibutuhkan sumber air dari air tanah dalam bentuk mata air. Penelitian ini bertujuan menggambarkan potensi mata air di Das Tangka. Metode yang digunakan yaitu Penginderaan jauh dan Sistem Informasi Geografis. Variabel yang dioverlay ada 5 yaitu;  curah hujan, topografi, cekungan air tanah, kerapatan sesar, dan kerapatan vegetasi. Hasil menggambarkan ada  tiga kelas potensi mata air. Sebagian besar wilayahnya berada pada kelas sedang seluas 29.929,48 Ha (62,84 persen), kemudian kelas rendah seluas 17.621,30 Ha (37 persen), dan kelas  tinggi hanya 79,06 (0,17 persen).  Potensi mata air kelas tinggi tersebar di Kecamatan Tompobulu dan Kecamatan Kahu.Kelas sedang tersebar di wilayah kecamatan Tinggimoncong, Tompobulu, Sinjai Tengah, sinjai Barat, Bontocani, Bulupoddo, Kahu, Kajuara dan Sinjai Utara. Kelas Rendah berada di wilayah Kecamatan Tinggimoncong, Tompobulu, dan Sinjai Barat.Dapat disimpulkan bahwa potensi mata air Das Tangka  kategori sedang. Adapun faktor yang sangat menentukan ke 5 faktor tersebut dan saling mendukung satu sama lainnya, namun yang paling dominan adalah Curah Hujan dan kerapatan sesar.. Pada wilayah potensi mata air kelas sedang mata air mengalir pada saat musim hujan dan sesudahnya, sedangkan pada saat musim kemarau sudah tidak ada air lagi mengalir.
IDENTIFIKASI AIR TANAH MENGGUNAKAN METODE GEOLISTRIK DI KECAMATAN POMALAA KABUPATEN KOLAKA PROPINSI SULAWESI TENGGARA
Authors: Kamur Sudarwin
Published: November 2022

ABSTRACTThis research is motivated by development and population growth continues to increase from day to day. The impact of population growth is the increase in residential land. The increase in residential land is sometimes not accompanied by the provision of clean water by PDAM, so that people use dug wells or drilled wells. In the Kolaka area, especially the Kolaka District area, which is the research location, it is also a location that is difficult to find fresh water, so the geoelectric method plays a very important role in efforts to determine which locations contain fresh water. This research uses resistivity geoelectric method with Wenner and Schlumberger configuration. Processing data using Res2Dinv to map 2D isoresistivity. The well depth data was processed using Microsoft Excel, Surfer 10.2 application and ArcGIS to create a groundwater network map. The measurement trajectory uses a space of 7 meters, 20 meters and 40 meters. The results of the study obtained different resistivity values for each rock. The resistivity variation obtained starts from 0.453 – 13,988 m. Groundwater resistivity values are in the range of resistivity values of 0.453 – 33.3 m. The lithology of the aquifers in the study area is alluvial and sandstone. In the research location, groundwater is generally found at a depth of more than 5 meters
PEMETAAN KETERSEDIAAN DAS TANGNGA DENGAN SISTEM INFORMASI GEOGRAFIS
Authors: Nasiah Nasiah , Syarif Erman , Irhamiah Andi
Published: November 2022

ABSTRACTCurrently, the number of damaged watersheds has not improved, as evidenced by the increasing incidence of natural disasters such as landslides, floods and droughts. Much work has been done to restore the watershed, but no significant results have been achieved. This type of research is quantitative descriptive using geographic information system (GIS) software analysis program, in the form of overlay analysis, factors that affect rock types, rainfall, slope, soil movement susceptibility, soil texture, and land use. Based on the estimation results of landslide susceptibility in the Tangnga watershed, three levels of landslide susceptibility were obtained, namely: non-prone with an area of 4,562 ha (55%) with distribution in Uluere, Bantaeng, Sinoa, Eremarasa, and Bissapu districts downstream of the Tangnga watershed. The level of vulnerability with an area of 3,246 Ha (39%) has a distribution in Uluere, Bantaeng, Bissapu, and Eremarasa Districts. And the level of vulnerability is very vulnerable with an area of 449 Ha (6%) having a distribution in the upstream Tagnga watershed, namely Uluere, Bantaeng, Eremarasa, and Sinoa Districts.
Dinamika Tata Kelola Hutan: Potret Penerapan Kebijakan Reforma Agraria dan Perhutanan Sosial di Taman Nasional Kerinci Seblat
Authors: Budiandrian Bayu , Jaetuloh Ahmad , Dinar Pramasty Ayu Koes
Published: November 2022

Pasca putusan Mahkamah Konstitusi No.35 Tahun 2012 mengenai Hutan Adat, status hutan adat yang dulu berada di bawah kewenangan Negera, saat ini dapat di keluarkan dari kawasan hutan Negara dan masyarakat hukum adat diberikan kewenangan untuk mengelola kembali hutan adatnya melalui izin pemerintah. Meski demikian, sampai saat ini masih banyak masyarakat Hukum Adat yang belum juga selesai dan berhasil memperjuangkan kembali hutan adatnya, salah satunya adalah masyarakat Rejang di Kabupaten Lebong, Bengkulu. Kebijakan Reforma Agraria dan Perhutanan Sosial (RA/PS) masuk dalam RPJMN 2014-2019. Kebijakan tersebut mengalokasikan 12,7 juta Ha kawasan hutan diperuntukkan sebagai  Perhutanan Sosial dan 9 juta Ha sebagai Tanah Obyek Reforma Agraria (TORA). Meski demikian, kebijakan reforma agraria dan perhutanan sosial dapat dipastikan membutuhkan reformasi politik, ekonomi dan budaya secara lebih luas dimana hal tersebut nampaknya belum berjalan dengan baik hingga ke tingkat lokal dan daerah. Di Kabupaten Lebong, Masyarakat Hukum Adat Rejang masih harus terus berjuang untuk merebut kembali haknya atas Hutan Adat. Untuk itu, penelitian ini berusaha memberikan gambaran tentang bagaimana praktek pelaksanaan kebijakan reforma agraria dan perhutanan sosial di Taman Nasional Kerinci Seblat. Metode pengumpulan data pada penelitian ini dilakukan dengan teknik wawancara mendalam dan pengamatan langsung di lapangan serta dibantu dengan proses diskusi kelompok terfokus atau FGD. Total responden yang diambil keseluruhan dalam penelitian ini sejumlah 35 responden. Hasil dari penelitian ini menunjukan bahwa terdapat dualisme pengelolaan hutan di Taman Nasional Kerinci Seblat antara Negara dan Masyarakat Hukum Adat. Selain itu, tata kelola Hutan Adat Rejang tidak bisa dilepaskan dari tata kelola kuteui atau kelembagaan masyarakat adat sendiri; common property. Di Hutan yang mereka sebut sebagai “Demong Samin”, setidaknya terdapat 2 (dua) klasifikasi hak yang melekat pada warga kuteui, yaitu propertior dan owner.
Analisis Kelayakan Finansial Usahatani Mentimun ( Cucumis sativus L. ) di Pusat Pelatihan Pertanian dan Perdesaan Swadaya (P4S) Eitastsu Kecamatan Wanayasa Kabupaten Purwakarta
Authors: Ulhaq Dhiya Nida , Sulandjari Kuswarini
Published: November 2022

Komoditas sayuran dan buah-buahan memegang bagian terpenting dari keseimbangan pangan, sehingga perlu tersedia setiap saat dalam jumlah yang cukup, mutu yang baik, aman konsumsi, harga yang terjangkau, serta dapat diakses oleh seluruh lapisan masyarakat. Kecamatan Wanayasa merupakan daerah yang menghasilkan berbagai jenis sayuran,   salah satunya adalah mentimun.  Di Pusat Pelatihan Pertanian dan Perdesaan Swadaya (P4S) Eitastsu Wanayasa diusahakan komoditas mentimun. Kelayakan finansial perlu difahami untuk keberlanjutan suatu usaha.  Penelitian ini dimaksudkan untuk : Menganalisis biaya, penerimaan, pendapatan, titik impas (Break Event Point=BEP) harga, titik impas produksi, dan R/C rasio  usahatani mentimun di P4S Wanayasa.  Merupakan penelitian kuantitatif.  Data penelitian berupa data primer dan sekunder.  Pengumpulan data dengan cara wawancara, studi dukomen dan pengamatan.  Responden penelitian adalah pemilik dan pengelola lahan, pekerja kebun dan petugas administrasi.    Data dianalisis secara kuantitatif melalui analisis pendapatan, analisis titik impas  dan analisis R/C rasio.   Hasil penelitian : dari analisis usahatani mentimun yang dilakukan dalam satu kali produksi pada lahan seluas 0,2 ha  mengeluarkan  biaya sebesar Rp. 21.140.100, menghasilkan penerimaan Rp 26.250.000, sehingga pendapatan Rp 5.109.900, titik impas (BEP) harga Rp 2.818/kg, sedangkan  harga jual petani Rp. 3.500 artinya usahatani mentimun mengalami keuntungan.   Titik impas (BEP) produksi 6.040 kg, sedangkan produksi yang diperoleh sebesar 7500 kg, berarti usahatani mentimun mengalami keuntungan. R/C ratio usahatani mentimun 1,2 yang artinya setiap Rp. 1 yang dikeluarkan oleh petani mentimun mendapatkan penerimaan  sebesar Rp 1,2 dengan demikian  layak untuk dijalankan.
GaN quasi-vertical trench MOSFETs grown on Si substrate with ON-current exceeding 1 A
Authors: Zhu Renqiang , Jiang Huaxing , Tang Chak Wah , Lau Kei May
Published: November 2022

This work reports GaN quasi-vertical trench MOSFETs grown on 6-inch Si substrates. The device with single-trench design shows a specific ON-resistance of 0.84 mΩ·cm2, a maximum drain current density of 5.0 kA cm−2, and a breakdown voltage of 320 V, after fine-tuning of the channel doping and employment of a thick bottom dielectric process. The large-area (∼0.54 mm2) GaN-on-Si trench MOSFET with multiple-finger design shows an ON-current of 1.1 A, an ON-resistance of 4.0 Ω and a breakdown voltage of 205 V.