Journal Universitas Wijaya Kusuma Surabaya
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ANALISIS INTEGRATIF DEEP STABILIZATION MENGGUNAKAN DIFA DENGAN VALIDASI UJI LABORATORIUM DAN PEMODELAN GEO5
Full text linkStabilitas pondasi jembatan pada akses tambang sering terganggu oleh kondisi tanah dasar labil akibat kadar air tinggi, kemiringan lereng, dan rendahnya daya dukung. Penelitian ini mengevaluasi efektivitas DIFA Soil Stabilizer (DIFA SS) sebagai metode deep stabilization yang lebih efisien dibanding perkuatan konvensional. Perbaikan tanah dilakukan dengan mengganti lapisan tanah lunak hingga kedalaman −6,00 m menggunakan campuran DIFA SS semen berukuran 9×6×6 m, serta stabilisasi in-situ mixing hingga kedalaman ±7 m dengan volume rata-rata 423,5 m³. Evaluasi dilakukan melalui uji laboratorium (kuat geser, CBR, dan modulus elastisitas) serta pemodelan numerik Geo5.Hasil penelitian menunjukkan peningkatan signifikan parameter mekanik tanah yang berdampak pada penurunan deformasi dan peningkatan stabilitas pondasi. Analisis menunjukkan abutmen aman terhadap guling dan geser dengan faktor keamanan >1,50, aman terhadap daya dukung, serta kestabilan lereng belakang abutmen memenuhi kriteria dengan faktor keamanan 1,75. Untuk meningkatkan ketahanan terhadap gaya lateral, direkomendasikan penggunaan sembilan blok beton berdiameter 0,9 m dan kedalaman 1,8 m dengan jarak antar sumbu 2,5 m. Analisis preloading menunjukkan total penurunan konsolidasi sebesar 1,790 m memerlukan waktu 171,20 tahun untuk mencapai 90% konsolidasi, dengan penurunan selama umur rencana jembatan 20 tahun hanya sekitar 1,61 cm. Secara keseluruhan, DIFA SS terbukti efektif, aman, dan ekonomis, dengan efisiensi biaya hingga 25% serta pengurangan potensi downtime operasional tambang hingga 20%
Eksplorasi Kurva Kuznets: Determinan Emisi CO2 dalam Pembangunan Ekonomi Kawasan ASEAN Periode 2014-2023
Full text linkGlobal warming is very serious because for the first time the average annual temperature has crossed the threshold of 1.5 ° C. One of the causes of the increase in temperature is the presence of greenhouse gases (GHG) and carbon dioxide (CO2) is one of these gases. ASEAN is a regional organization whose member countries are mostly middle income countries and also has high economic growth because they are in the stage of economic development where according to the environmental kuznet curve (EKC) hypothesis this will increase environmental degradation. In addition, ASEAN has a high level of CO2 emissions. This study aims to analyze the factors that influence carbon dioxide emissions in ASEAN from 2014 to 2023. The variables used are CO2 emissions as the dependent variable, then GDP, FDI, Population, and Industrial Rate as the dependent variables, then analyzed using the panel data regression method. The results of the study showed that GDP and Population have a significant positive effect on CO2 emissions while FDI and Industrial Rate produce negative coefficients but do not have a significant effect on CO2 emissions
Implementasi Pembelajaran Berdiferensiasi Menggunakan Model Pembelajaran Problem Based Learning (PBL) Dalam Meningkatkan Hasil Belajar Matematika Kelas IV
Full text linkThis research is motivated by the low mathematics learning outcomes of students. The study aims to improve the mathematics learning outcomes of students by implementing differentiated learning using the Problem-Based Learning model in Class IV of SDN 19 Jambi. This study is a Classroom Action Research consisting of two cycles. Based on the observation results of teacher activities in Cycle I, 78% were categorized as good, and in Cycle II, it increased to 85%. Based on the research data, the test results in the form of evaluation questions to determine student learning outcomes in Cycle I were 57%, and in Cycle II, it increased to 76%. Therefore, it can be concluded that the implementation of differentiated learning using the Problem-Based Learning model can improve the mathematics learning outcomes of Class IV SDN 19 Jambi
Social Reconciliation Strategy and the Impact of Political Polarization in Jatilengger Village Post-Village Head Election
No full textThis study aims to examine the process of reconciliation following the village head election in Jatilengger Village and its impact on the community’s social cohesion. The research adopts a descriptive qualitative approach. Data sources were obtained from community leaders, village officials, and residents from both sides of the competing village head candidates. Data collection techniques included direct field observation, in-depth interviews, and documentation of various social activities conducted after the election. Data analysis employed the interactive model developed by Miles and Huberman, consisting of three key components: data reduction, data display, and conclusion drawing/verification. Data reduction was carried out by selecting and simplifying essential information from interviews and observations. The data were then presented in descriptive narrative form to reveal recurring social patterns. Conclusion drawing was conducted continuously throughout the research process to ensure the validity and consistency of the findings. The results indicate that the reconciliation process occurred informally through the active involvement of local leaders and the implementation of strategies rooted in local values, such as community discussions, collective work, religious gatherings, and Independence Day celebrations. Although emotional wounds and traces of political fanaticism remained, the reconciliation efforts effectively restored social relationships and strengthened the village’s social cohesion. These findings highlight the significant role of local socio-cultural values in maintaining democratic sustainability at the village level
PERGESERAN PERILAKU MEMILIH PADA PEMILIH PEMULA DALAM PEMILU 2019
Full text linkFirst-time voters have voting preferences that are not dependent on ideological values but are more likely to be influenced by everyday issues such as traffic congestion in big cities, job availability, quality education, availability of basic necessities, and public services. The reality of young people reveals that they consume social media more as an initial description of their voting behavior preferences. This pattern evolves over time because, fundamentally, first-time voters are adaptive to the dynamics of issues and periods. In the 2014 election, first-time voters were confronted with narratives of pragmatism, populism, and oligarchy. Now, in 2019, they face narratives of identity conservatism and national pluralism. Keywords: first-time voters, elections, pragmatism, apolitical, politics, behavio
Kebangkitan Partai Demokrat di Kabupaten Bandung: Analisis Strategi Revitalisasi Elektoral pada Pemilu 2024
Full text linkArtikel ini menganalisis kebangkitan Partai Demokrat pada Pemilu Legislatif 2024 di Kabupaten Bandung dengan menggunakan kerangka teori political marketing Peter Schroder, khususnya strategi ofensif dan defensif. Penelitian ini dilatarbelakangi oleh fenomena meningkatnya kursi Partai Demokrat dari lima kursi pada 2019 menjadi tujuh kursi pada 2024, sekaligus mengindikasikan adanya proses revitalisasi elektoral di tingkat lokal. Hasil penelitian menunjukkan bahwa strategi ofensif Partai Demokrat memadukan daya tarik simbolik melalui keterlibatan tokoh nasional dan lokal, strategi berbasis kedekatan sosial dengan mengusung isu pendidikan, serta pemanfaatan teknologi komunikasi dalam kampanye politik. Sementara itu, strategi defensif dilakukan melalui ekspos rutin kinerja positif, program sosial berkelanjutan, penguatan soliditas internal partai, dan pendidikan politik pemilih. Perpaduan kedua strategi ini mampu meningkatkan elektabilitas Partai Demokrat di Kabupaten Bandung serta mengembalikan daya saing partai dalam kontestasi elektoral. Temuan ini menegaskan bahwa keberhasilan partai dalam meraih kembali momentum politik tidak hanya ditentukan oleh figur karismatik, tetapi juga oleh konsistensi strategi yang terintegrasi antara ofensif dan defensif, yang dapat dijadikan model dalam studi dinamika politik lokal
Pengaruh Faktor Internal dan Eksternal terhadap Minat Gapoktan Jarak Kulon Kabupaten Jombang dalam Pemanfaatan POC Limbat (The Influence of Internal and External Factors on the Interest of the Jarak Kulon Farmers Group, Jombang Regency in Utilizing POC Limbat)
Full text linkThe long-term use of chemical fertilizers in agricultural practices can reduce the quality of soil and the environment. One of the alternatives to a more environmentally friendly sustainable solution is the use of tofu liquid waste as liquid organic fertilizer (POC Limbat). This study aims to analyze the interest of farmers of Gapoktan Jarak Kulon, Jogoroto District, Jombang Regency in adopting POC Limbat, which is influenced by internal and external factors. The internal factors analyzed included age, education level, and participation in the group, while external factors included the availability of resources and the intensity of counseling, using quantitative methods based on multiple linear regression analysis. In the results of the study, it was shown that internal factors did not have a significant effect on farmers' interests, while the availability of resources and the intensity of extension were proven to have a significant positive influence. The contribution of increasing interest from the resource factor reached 0.931%, while from extension reached 0.813%, so that it can encourage the adoption of agricultural innovations that are more environmentally friendly, especially in the use of local waste.Keywords: Tofu Waste, POC, Farmer Interest, Internal Factors, External Factor
ANALISIS ALIH FUNGSI LAHAN PERTANIAN DI KECAMATAN CANDI KABUPATEN SIDOARJO: Analysis of Agricultural Land Conversion in Candi District, Sidoarjo Regency
Full text linkKonversi lahan pertanian merupakan isu utama yang dihadapi sektor pertanian Indonesia. Penelitian ini bertujuan menganalisis konversi lahan pertanian di Kecamatan Candi, Kabupaten Sidoarjo—sebuah wilayah peri-urban yang menghadapi tekanan pembangunan dan pertumbuhan penduduk yang tinggi. Tujuan penelitian ini adalah untuk: (1) mengkaji tren konversi lahan, (2) menganalisis faktor-faktor yang memengaruhinya, dan (3) mengidentifikasi dampak sosial-ekonomi terhadap petani yang lahannya telah dikonversi. Pendekatan survei kuantitatif diterapkan pada 30 responden petani dari empat desa, yang dipilih secara snowball sampling berdasarkan kriteria telah menjual sawah mereka. Data dianalisis menggunakan analisis tren eksponensial, regresi linier berganda, dan statistik deskriptif. Hasil penelitian menunjukkan bahwa konversi lahan di Kecamatan Candi telah terjadi secara signifikan, ditandai dengan penurunan luas lahan sawah yang terus menerus. Faktor-faktor yang secara signifikan memengaruhi konversi lahan meliputi tingkat pendidikan petani, modal usaha tani, pendapatan usaha tani, dan kebutuhan mendesak akan uang. Sementara itu, variabel seperti usia petani, sistem pewarisan, dan jumlah tanggungan tidak terbukti berdampak signifikan. Dampak sosial-ekonomi yang dialami petani meliputi penurunan pendapatan dari sektor pertanian dan peralihan ke sektor informal.
Kata kunci: Konversi Lahan, Petani, Dampak Sosial Ekonomi.
Agricultural land conversion is a major issue facing Indonesia's agricultural sector. This study aims to analyze agricultural land conversion in Candi District, Sidoarjo Regency—a peri-urban area facing development pressures and high population growth. The research objectives were to: (1) examine land conversion trends, (2) analyze the factors influencing them, and (3) identify the socio-economic impacts on farmers whose land has been converted. A quantitative survey approach was applied to 30 farmer respondents from four villages, selected using snowball sampling based on the criteria of having sold their rice fields. Data were analyzed using exponential trend analysis, multiple linear regression, and descriptive statistics. The results revealed that land conversion in Candi District has occurred significantly, marked by a continuous decline in rice field area. Factors significantly influencing land conversion include farmer education level, farming capital, farming income, and urgent need for money. Meanwhile, variables such as farmer age, inheritance system, and number of dependents were not shown to have a significant impact. The socio-economic impacts experienced by farmers include decreased income from the agricultural sector and a shift to the informal sector.
Keywords: Land Conversion, Farmers, Sosio-economic impact
ANALISIS TREND PRODUKSI DAN HARGA TEMBAKAU DI BOJONEGORO (Analysis of Tobacco Production and Prices Trends in Bojonegoro)
Full text linkThe Trend Analysis is a technique used to do a forecast in the future. In addition, this trend is used to determine the trend of the data going up or down. Tobacco is a superior commodity in the plantation sector which is very important for the Indonesian economy. Products traded include tobacco leaves and cigarettes, each of which has significant economic value. Every region in Indonesia has tobacco products with different distinctive flavors, depending on local soil and climate conditions. This makes Indonesian tobacco have its own charm in local and international markets. One of the areas that become tobacco production in Indonesia is Bojonegoro Regency. The ability to forecast trend models using MAPE values. This research aims to determine the trend in tobacco production and price data in Bojonegoro Regency for the period 2014 - 2023, as well as forecasting from the trend analysis model. Tobacco production data has an uptrend pattern, while tobacco price data has a fluctuating pattern. Based on the results of the trend analysis, it can be known that tobacco production and prices in Bojonegoro Regency tend to increase every year as in the forecast results of the trend model. The forecasting ability of tobacco production and prices in the future is quite good based on MAPE values of 17.6% and 18.9%.Keywords: Trend Analysis, Production, Price, Tobacco, Forecastin