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Correlation between the willingness to compromise and effectiveness of regional regulations with green consumer behaviour Lina Lina; Rita Retnowati; Yossa Istiadi
Indonesian Journal of Applied Environmental Studies Vol 2, No 2 (2021): Volume 2 Number 2 October 2021
Publisher : Universitas Pakuan

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33751/injast.v2i2.4042

The objective of this study is to find the correlation between the effectiveness level of regional regulations and willingness to compromise with green consumer behaviour. This research applied use correlational surveys with 100 samples housewives in Bogor city. The data analysis technique used is multiple regression. The result of this research shows that there is a very significant positive relationship that has a local regulation permit with green consumer behaviour, with a variable contribution of 56.2%. There is a very significant positive relationship between willingness to compromise with green consumer behaviour, with the variable contribution being 38.3%. There is a very significant positive relationship between the application of local regulations and the willingness to compromise together with green consumer behaviour, with the variable contribution being 57.9%. The functional relationship between the application of local regulations and willingness to compromise with the green consumer behaviour variable fulfills the regression equation Å¶12 = 21.866 + 0.404X1 + 0.214X2 and this relationship is significant.Tujuan dari penelitian ini adalah untuk mengetahui hubungan antara tingkat efektivitas peraturan daerah dan kemauan berkompromi dengan perilaku konsumen hijau. Penelitian ini menggunakan metode survei korelasional dengan sampel 100 ibu rumah tangga di kota Bogor. Teknik analisis data yang digunakan adalah regresi berganda. Hasil penelitian menunjukkan bahwa terdapat hubungan positif yang sangat signifikan antara izin peraturan daerah dengan perilaku konsumen hijau, dengan kontribusi variabel sebesar 56,2%. Terdapat hubungan positif yang sangat signifikan antara kesediaan berkompromi dengan perilaku konsumen hijau, dengan kontribusi variabel sebesar 38,3%. Terdapat hubungan positif yang sangat signifikan antara penerapan peraturan daerah dengan kemauan berkompromi dengan perilaku konsumen hijau, dengan kontribusi variabel sebesar 57,9%. Hubungan fungsional antara penerapan peraturan daerah dan kemauan berkompromi dengan variabel perilaku konsumen hijau memenuhi persamaan regresi 12 = 21,866 + 0,404X1 + 0,214X2 dan hubungan ini signifikan.

Relationship between disaster knowledge and environmental culture with disaster preparedness behaviour Rosadi Rosadi; Isman Kadar; Yossa Istiadi
Indonesian Journal of Applied Environmental Studies Vol 1, No 1 (2020): Volume 1 Number 1 April 2020
Publisher : Universitas Pakuan

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33751/injast.v1i1.1971

This research consists of two independent variables, the disaster knowledge and environmental culture, and a dependent variable of disaster preparedness behaviour. The objective is to determine the relationship between disaster knowledge and environmental culture with disaster preparedness behaviour, as well as the relationship between both of the together with disaster preparedness behaviour. The study was conducted through 166 students of three senior high schools in the District of West Karawang, West Java, which taken by proportional random sampling. The method of survey was employed in this study and the data analyzed by statistical test of correlation and simple linier regression as well as multiple linear correlation and regression, which was conducted at significance level of Î± = 0.01 and Î± = 0.05. Based on the results, it was found that there was a positive and significant relationship between disaster knowledge and disaster preparedness behaviour with a correlation coefficient value of ry1 = 0.22 and a coefficient of determination value of (r2) = 0.049. There is a positive and significant relationship between environmental culture and disaster preparedness behaviour with a correlation coefficient value of ry2 = 0.25 and a coefficient of determination value of (r2) = 0.064. There is a positive and significant relationship between disaster knowledge and environmental culture together with disaster preparedness behaviour with a correlation coefficient value of ry12 = 0.32 and a coefficient of determination value of (r2) = 0.097. Thus, it can be concluded that students disaster preparedness behaviour can be improved through either disaster knowledge and environmental culture.Penelitian ini terdiri atas dua variabel bebas, pengetahuan kebencanaan dan budaya lingkungan, serta satu variabel terikat yaitu perilaku siaga bencana. Tujuannya untuk mengetahui hubungan antara pengetahuan kebencanaan, budaya lingkungan dengan perilaku siaga bencana, serta hubungan keduanya secara bersama-sama dengan perilaku siaga bencana. Penelitian dilaksanakan melalui 166 siswa di tiga sekolah menengah atas, Kecamatan Karawang Barat, yang diambil secara proporsional random sampling. Metode survey digunakan dan data dianalisis dengan uji statistik korelasi dan regresi sederhana serta korelasi dan regresi linear ganda, dilakukan pada taraf signifikansi Î± = 0,01 dan Î± = 0,05. Hasil menunjukkan bahwa terdapat hubungan positif dan signifikan antara pengetahuan kebencanaan dengan perilaku siaga bencana dengan nilai koefisien korelasi ry1 = 0,22 dan koefisien determinasi (r2) = 0,049. Terdapat hubungan positif dan signifikan antara budaya lingkungan dengan perilaku siaga bencana dengan nilai koefisien korelasi ry2 = 0,25dan koefisien determinasi (r2) = 0,064. Terdapat hubungan positif dan signifikan antara pengetahuan kebencanaan dan budaya lingkungan secara bersama-sama dengan perilaku siaga bencana, dengan nilai koefisien korelasi ry12 = 0,32 dan koefisien determinasi (r2) = 0,097. Jadi, dapat disimpulkan bahwa perilaku siaga bencana siswa dapat ditingkatkan melalui pengetahuan kebencanaan dan budaya lingkungan.

Diversity and abundance of insects at industrial plantation forest and natural forest ecosystems in Siak, Riau Province Asril Asril; Yossa Istiadi; Budi Tjahyono
Indonesian Journal of Applied Environmental Studies Vol 1, No 1 (2020): Volume 1 Number 1 April 2020
Publisher : Universitas Pakuan

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33751/injast.v1i1.1972

The objective of research is to find out the differences and similarities of insect diversity, abundance and composition between in industrial plantation forest (HTI) and natural forest (Arboretum) ecosystems. Field research was carried out in the Rasau Kuning area, Perawang Barat Regency, Riau Province, while specimens identification conducted at LIPI Biology Research Center Laboratory in February - March 2019. Line transect sampling technique and fluorescent light traps were used as methods for collecting insects from both two different ecosystems with three replications. The results found five order of insects i.e. Lepidoptera, Hemiptera, Coleoptera, Orthoptera, and Hymenoptera which consisting of 35 species in plantation forest ecosystem, and 26 species in natural forest ecosystem where both ecosystems dominated by Lepidoptera. Statistical analysis of research results show that two average insects species diversity index within both plantation forest (HTI) and natural forest (Arboretum) ecosystems is not different (t = 1,419; p0,05). The similarity index found very similar (23,56%) between both ecosystems. Predatory insects which was found in this study is Sycanus sp. (Hemiptera: Reduviidae) from the order of Lepidoptera.Penelitian ini bertujuan untuk mengungkapkan perbedaan dan kesamaan keanekaragaman jenis, kelimpahan, dan komposisi jenis serangga antara di ekosistem hutan tanaman industry (HTI) dengan ekosistem hutan alam (Arboretum). Penelitian lapang dilakukan di areal Rasau Kuning, Kabupaten Perawang Barat, Provinsi Riau, sementara identifikasi specimen dilakukan di Laboratorium Pusat Penelitian Biologi LIPI, pada bulan Pebruari - Maret 2019. Metode sampling line transect dan perangkap cahaya berflouresen digunakan untuk menangkap serangga di kedua ekosistem tersebut melalui 3 kali ulangan. Hasil studi menemukan 5 ordo serangga yaitu Lepidoptera, Hemiptera, Coleoptera, Orthoptera, and Hymenoptera, dengan masing-masing 25 spesies terdapat di ekosistem hutan tanaman (HTI) dan 26 spesies di ekostem alam (Arboretum), yang mana keduanya didominasi ordo Lepidoptera. Melalui analisis statistik, hasil penelitian menunjukkan bahwa pada kedua ekosistem tidak terlihat adanya perbedaan indeks keanekaragaman jenis (t =1,419; p0,05). Begitu juga dengan indeks kesamaan menunjukan tingkat yang sangat sama (23,56%) antara kedua ekosistem tersebut. Pada kajian ini juga ditemukan spesies serangga predator yaitu Sycanus sp. ((Hemiptera; Reduviidae) dari ordo Lepidoptera.

Prediction of expected genetic gain in progeny test of Samama [Anthocephalus macrophyllus (Roxb.) Havil.] in West Seram District, Maluku Province, Indonesia Ambar Dwi Suseno; Yossa Istiadi; Sata Yoshida Srie Rahayu
Indonesian Journal of Applied Environmental Studies Vol 2, No 1 (2021): Volume 2 Number 1 April 2021
Publisher : Universitas Pakuan

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33751/injast.v2i1.2862

The research objective is to find out genetic variation, estimated heritability value and the expected genetic gain of Samama [Anthocephalus macrophyllus (Roxb.) Havil.] on variation in stem diameter and plant height as superior seed producers. The research was conducted in Uraur Village, West Seram Regency, Maluku Province. The trials consisted of 80 families. All of the trials were laid out in randomized complete block designs (RCBD), 4-trees plots with 4 replications (blocks) at spacing of 5mÃ—2m. Data collection was carried out for 2 months (February to March 2020) and was focused on observing growth variations and genetic parameters in the progeny trial block at 4 years of age including plant height and diameter at breast height. The results of this study indicate that there are variations in growth, where the Anova test results show very significant differences in the plant height parameters namely Family (F = 3.417 p 0.01), Block (F = 437.465 p 0.01) and Family and Block Interactions (F = 3.351 p 0.01). The stem diameter parameters also showed very significant differences, namely Family (F = 2.785 p 0.01), Block (F = 353.095 p 0.01) and Family and Block Interaction (F = 2.611 p 0.01). The value of family heritability and individual heritability on plant height characters belonged to a high category with a family heritability value of 0.7213 and individual heritability value of 0.8811, while the stem diameter character for individual heritability was high with a value of 0.4406 but family heritability was moderate with value of 0.5204. The value of genetic correlation was high and positive and generally shows a greater value than the phenotypic correlation. Genetic correlation values ranged from 0.967 while phenotypic correlation values ranged from 0.8944. The highest selection priority was found in the height of the stem with a weight constant of 0.239. Predicted expected genetic gain was 3.0% for diameter parameter and 3.2% for height parameter.Objektif dari penelitian ini adalah menemukan variasi genetik, taksiran nilai heritabilitas serta peluang perolehan expected genetic gain tanaman Samama [Anthocephalus macrophyllus (Roxb.) Havil.] pada variasi diameter dan tinggi pohon sebagai penghasil benih unggul. Penelitian dilakukan di Desa Uraur Kabupaten Seram Bagian Barat Provinsi Maluku. Percobaan ini menggunakan 80 famili. Penelitian ini dibangun dengan desain randomized completely block design (RCBD), jarak tanam 5 x 2 m, 4 ulangan (blok) dan 4 treesplot. Pengumpulan data dilakukan selama 2 bulan (Februari sampai dengan bulan Maret 2020) memfokuskan pada pengamatan variasi pertumbuhan dan parameter genetik yang berada di blok uji keturunan pada umur 4 tahun meliputi tinggi dan diameter setinggi dada. Hasil Penelitian ini menunjukkan bahwa terdapat variasi pertumbuhan, dimana dari hasil uji Anova menunjukkan perbedaan sangat nyata pada parameter tinggi yaitu Famili (F=3,417 p0,01), Blok (F=437,465 p0,01) dan Interaksi Famili dan Blok (F=3,351 p0,01). Pada parameter diameter juga menunjukkan perbedaan sangat nyata yaitu Famili (F=2,785 p0,01), Blok (F=353,095 p0,01) dan Interaksi Famili dan Blok (F=2,611 p0,01). Nilai heritabilitas famili dan heritabilitas individu pada karakter tinggi tanaman memiliki kategori tinggi dengan nilai heritabilitas famili 0,7213 dan nilai heritabilitas individu 0,8811, sedangkan pada karakter diameter tanaman untuk heritabilitas individu tergolong tinggi dengan nilai sebesar 0,4406 namun heritabilitas famili tergolong sedang dengan nilai 0,5204. Nilai korelasi genetik bernilai tinggi dan positif serta secara umum menunjukkan nilai yang lebih besar dibandingkan dengan korelasi fenotipik. Nilai korelasi genetik berkisar 0,967 sedangkan nilai korelasi fenotipiknya berkisar 0,8944. Prioritas seleksi tertinggi ditemukan pada tinggi batang dengan nilai konstanta bobot sebesar 0,239. Prediksi expected genetic gain diperoleh 3,0 % untuk parameter diameter dan 3,2 % untuk parameter tinggi.

Organoleptic testing of coconut midrib ash and alcohol as preservatives of insect specimens Hasan Maulana; Yossa Istiadi; Dolly Priatna
Indonesian Journal of Applied Environmental Studies Vol 1, No 2 (2020): Volume 1 Number 2 October 2020
Publisher : Universitas Pakuan

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33751/injast.v1i2.2193

This study uses a Completely Randomized Design experimental method (CRD) consisting of three treatments with a range of 5 days, 10 days and 15 days, with each treatment uses three insect specimens. The treatments in this study were; P1 (200 mg ash + 200 ml distilled water), P2 (70% alcohol), and P0 (control). To observe the changes in texture, aroma and color in the inspect specimens, 50 panelists were engaged, who were aged between 17-30 years, that were not color blind and/or reporting any ill health at the time of sampling. Panelists observed the specimens for texture, aroma and color. Resulting data was analyzed using t test, frequency tabulation, histogram data and normality test. The texture testing treatments yielded tcount = 0.02521 (p 0.05) showing no significance between the coconut midrib ash and alcohol preserved samples, with the Ho accepted, so there is no difference in the texture of insect specimens preserved in either coconut midrib ash or alcohol. The aroma test resulted in tcount = 0.00908 (p 0.05) showing again there was no significant difference between insect specimens preserved in coconut midrib ash and alcohol. Thus, the Ho can be accepted, with no difference in the aroma of insect specimens preserved in coconut midrib ash or with alcohol. The color test resulted in a tcount = 0.05635 (p 0.05), giving a insignificant result between insect specimens preserved in coconut midrib ash or alcohol. Thus, the Ho can be accepted, and there is no difference in color of insect specimens preserved with coconut midrib ash or those preserved with alcohol. From the overall results and analysis, we can conclude there is no difference in the quality insect specimens preserved either by coconut midrib ash and alcohol for a maximum 15 days. Penelitian ini menggunakan metode eksperimen rancangan acak lengkap (RAL) yang terdiri dari tiga perlakuan dengan kisaran lama waktu 5 hari, 10 hari, dan 15 hari. Setiap satuan percobaan menggunakan tiga spesimen serangga, perlakuan dalam penelitian ini meliputi P1(200 mg abu + 200 ml aquades), P2 (alkohol 70%), dan P0(kontrol). Parameter yang diamati mengenai tekstur, aroma dan warna. Untuk mengamati perubahan tekstur, aroma dan warna yang terjadi, dilakukan oleh 50 orang panelis yang berusia antara 17-30 tahun dengan kriteria tidak buta warna dan tidak sedang dalam keadaan sakit. Data yang diperoleh dianalisis dengan menggunakan uji t, tabulasi frekuensi, data histogram dan uji normalitas. Berdasarkan hasil penelitian, pengujian tekstur menghasilkan nilai thitung = 0,02521 (p 0,05), diperoleh hasil yang tidak berbeda secara signifikan antara perlakuan dengan abu pelepah kelapa dan alkohol terhadap tekstur spesimen serangga. Dengan demikian dapat disimpulkan bahwa tidak terdapat perbedaan tekstur spesimen serangga yang diawetkan dengan abu pelepah kelapa dengan yang diawetkan dengan alkohol. Pengujian aroma menghasilkan nilai thitung= 0,00908 (p 0,05), diperoleh hasil tidak berbeda secara signifikan antara perlakuan dengan abu pelepah kelapa dan perlakuan dengan alkohol. Dengan demikian dapat disimpulkan bahwa tidak terdapat perbedaan warna spesimen serangga antara yang diawetkan dengan abu pelepah kelapa dengan yang diawetkan dengan alkohol. Dari hasil pengamatan dapat disimpulkan bahwa tidak ada perbedaan kualitas antara specimen serangga yang diawetkan dengan abu pelepah kelapa dengan yang diawertkan dengan alcohol dalam waktu maksimum 15 hari.

Differences of terrestrial mammal species diversity between natural forest and edge forest areas in Batutegi Protected Forest, Lampung, Indonesia Robithotul Huda; Yossa Istiadi; Dolly Priatna
Indonesian Journal of Applied Environmental Studies Vol 1, No 1 (2020): Volume 1 Number 1 April 2020
Publisher : Universitas Pakuan

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33751/injast.v1i1.1973

This research is an explorative quantitative survey by testing differences in species of terrestrial mammals found in natural forest (core) and edge forest (ecoton) areas. The data collection was obtained by using camera traps installed for 3 months based on a grid cell 2 x 2 km, with a total of 16 camera traps placed in core area and another 17 were in ecotone. The object of this research was medium (0.3 kg) to large terrestrial mammals. The t test was used to determine the differences the species diversity of mammals between two research areas. The study shows that there are 22 species of terrestrial mammals with a total of 552 individuals, which is distributed in both research areas. In the core area there are 18 species with 237 individuals, while in the ecotone there are 18 species with 315 individuals. Analyses the species richness index was 17.8171 for the core area while 17.8262 for the ecotone area. Similarity index in both study areas ranged from 0.7106 to 1. While the value of diversity index (Shannon-Wiener) in the core area H '= 2.2038 and in the ecotone area H' = 2.0541. Three species with the greatest relative abundance values are Porcupine (Hystrix brachyura), Barking Deer (Muntiacus muntjak), and Wild Boar (Sus scrofa). Based on the t tests of the two research areas, which are core area and ecotone, obtained tcount 0.41365 (p 0.05), it can be interpreted that the diversity of terrestrial mammals species in the core and ecotone areas is not the same.Penelitian ini merupakan penelitian kuantitatif survei eksploratif dengan melakukan pengujian perbedaan terhadap jenis mamalia teresterial yang ditemukan di wilayah hutan alam (inti) dan wilayah hutan tepi (ekoton). Pendataan mamalia teresterial menggunakan camera trap yang dipasang selama 3 bulan berdasarkan grid cell 2 x 2 km, dengan 16 camera trap dipasang di areal inti dan 17 lainnya di ekoton. Objek penelitian adalah mamalia teresterial berukuran sedang (0,3 kg) hingga mamalia besar. Uji t digunakan untuk menentukan perbadaan keragaman jenis mamalia teresterial pada dua areal penelitian. Hasil penelitian menunjukkan terdapat 22 jenis mamalia teresterial dengan total 552 individu, yang tersebar di kedua areal penelitian. Pada areal inti terdapat 18 jenis dengan 237 individu, sedangkan pada areal ekoton ditemukan 18 jenis dengan 315 individu. Analisis indeks kekayaaan jenis menunjukkan nilai 17,8171 untuk areal inti dan 17,8262 untuk areal ekoton. Indeks kemerataan pada kedua areal penelitian berkisar antara 0,7106 hingga 1. Sedangkan nilai indeks keragaman (Shannon-Wiener) pada areal inti H = 2,2038 dan pada areal ekoton H= 2,0541. Tiga jenis mamalia teresterial dengan kelimpahan relatif terbesar yaitu Landak (Hystrix brachyura), Kijang (Muntiacus muntjak), dan Babi hutan (Sus scrofa). Berdasarkan uji beda terhadap dua areal penelitian yaitu areal hutan alam (areal inti) dan areal tepi hutan (ekoton) didapatkan thitung 0,41365 (p 0,05), maka dapat diartikan bahwa keragaman jenis mamalia teresterial di areal inti dan ekoton tidak sama.

The role of the parties in mangrove ecosystem recovery in Juntinyuat Coast, West Java, Indonesia Muhamad Hasan; Dolly Priatna; Yossa Istiadi
Indonesian Journal of Applied Environmental Studies Vol 3, No 2 (2022): Volume 3 Number 2 October 2022
Publisher : Universitas Pakuan

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33751/injast.v3i2.5120

Coastal abrasion is a problem that needs to be addressed thoroughly. If not properly managed, coastal abrasion can lead to other environmental issues, such as damage to mangroves and coastal ecosystems. The local government is actively carrying out mangrove ecosystem restoration program to conserve the coastal ecology by involving related agencies, industries, and the community surrounding the Juntinyuat coastal area. The focus of this research is to find out the planning, implementation, and monitoring carried out in relation to the restoration of the mangrove ecosystem based on the involvement of the parties in overcoming coastal abrasion on the coast of Juntinyuat, Indramayu Regency, West Java. Data were collected by conducting observations, interviews, and documentation to the community and the parties involved in restoring the mangrove ecosystem on the Juntinyuat coast. The results showed that mangrove ecosystem damage in the coastal area of Juntinyuat generates a high level of abrasion. The damage caused by abrasion threatens settlements, ponds, and agricultural land, as well as threatens the gas and oil pipelines of Pertamina Gas in the West Java operation area (Pertagas OWJA). There is a relationship between the critical condition of the mangrove ecosystem in the Juntinyuat coastal area and the initiation of efforts to restore the mangrove ecosystem. The initiation of mangrove ecosystem restoration arose from the critical condition of mangroves, which necessitates careful planning to restore damaged mangrove conditions. Related parties concerned with the preservation of the mangrove ecosystem subsequently coordinate to plan the mangrove ecosystem restoration program on the Juntinyuat coast. The mangrove ecosystem restoration was conducted after an initial survey in mid-2014. The role of the parties in planning, implementing, and monitoring the restoration of the mangrove ecosystem is running well and maximally with a clear division of duties and responsibilities. Currently, the results of the restoration of the mangrove ecosystem on the Juntinyuat coast can be felt together with the denser mangrove cover, reducing the abrasion impact, and making it a mangrove ecotourism area. In the future, it is necessary to form a coordinating team for the strategy of mangrove ecosystem management at the regency and sub-district levels to synergize policies and programs for managing mangrove ecosystems. Empowerment activities need to be carried out intensively to encourage a change in the role of mangrove management.

Analysis of the determinants and typology of hydrometeorological disaster in Sukajaya Subdistrict, Bogor Regency, West Java, Indonesia Yossa Istiadi; Dolly Priatna
Indonesian Journal of Applied Environmental Studies Vol 2, No 1 (2021): Volume 2 Number 1 April 2021
Publisher : Universitas Pakuan

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33751/injast.v2i1.3113

The objective of this research is to determine the factors as a typology of hydrometeorological disasters. The research method employed is post-disaster survey activities through hypothetical descriptions from October to December 2020. The analysis technique uses factor analysis on five variables, namely runoff, infiltration, slope, land cover, and infrastructure. The data retrieval obtained nine areas of landslide disaster points along 20 kilometers from Kiarapandak Village to Cisangku Village, Sukajaya Subdistrict, Bogor Regency, one of which were the areas affected by landslides in January 2020. From the factorial analysis results, it was found that the five variables above were suitable as a factor for determining disaster based on correlation values (r), that includes Factor 1 which is the variable of land slope (0.855) and the infrastructure variable (0.872). Factor 2 is water infiltration (0.928), water runoff (0.269), and land cover (0.717). In conclusion, the typology of hydrometeorological disasters is distinguished based on two determinants, firstly the physical construction of land, slopes, as well as infrastructure of road and river. Secondly, factors of water flow, water infiltration, runoff, and land cover.Tujuan penelitian adalah membuat determinasi faktor-faktor sebagai tipologi kebencanaan hidrometeorologi. Metode penelitian melalui kegiatan survey pasca bencana melalui deskripsi hipotetik pada bulan Oktober-Desember 2020. Teknik analisis menggunakan analisis faktor pada 5 (lima) variabel yaitu limpasan, resapan, kemiringan, tutupan lahan, dan infrastruktur. Pengambilan data mendapatkan 9 (sembilan) daerah titik bencana longsor sepanjang 20 kilometer dari Desa Kiarapandak sampai Desa Cisangku, Kecamatan Sukajaya Kabupaten Bogor, yang merupakan wilayah terkena bencana longsor pada bulan Januari 2020. Dari hasil analisis faktorial diperoleh bahwa 5 (lima) variabel di atas layak dijadikan faktor determinasi kebencanaan berdasarkan nilai korelasi (r), meliputi Faktor 1 adalah variabel kemiringan lahan (0,855) dan variabel infratruktur (0,872). Faktor 2 adalah resapan air (0,928), limpasan air (0,269), dan tutupan lahan (0,717). Kesimpulan, tipologi bencana hidrometeorologi dibedakan berdasarkan dua faktor determinasi yaitu pertama faktor konstruksi fisik lahan, kemiringan dan infratruktur jalan dan sungai, dan faktor aliran air, resapan air, limpasan, dan tutupan lahan.

Organizational Culture, Self-Efficacy, and ICT Skills as a Mediator of Educator Performance in Aviation Vocational Education Tommy Hendratno; Suhendra Suhendra; Yossa Istiadi
Glosains: Jurnal Sains Global Indonesia Vol. 7 No. 3 (2026): Glosains: Jurnal Sains Global Indonesia
Publisher : Sekolah Tinggi Agama Islam Kuningan

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.59784/glosains.v7i3.777

Background: Within the vocational education sector, educator performance serves as a fundamental determinant of graduate quality; however, it frequently encounters constraints arising from rigid institutional structures and inadequate digital proficiency. Objective: This study examines the influence of organizational culture, self-efficacy, and Information and Communication Technology (ICT) skills, both directly and indirectly, on the performance of educators at the Indonesian Aviation Polytechnic (PPI) Curug. Methods: A quantitative research design employing a survey method was applied to 85 respondents consisting of lecturers and instructors. Path analysis using SPSS software served as the primary data analysis technique. Results: The findings indicate that (1) organizational culture has a direct positive effect on educator performance (βy1 = 0.024); (2) self-efficacy has a direct positive effect on educator performance (βy2 = 0.488); (3) ICT skills have a direct positive effect on educator performance (βy3 = 0.499); (4) organizational culture has a direct positive effect on ICT skills (βz1 = 0.563); and (5) self-efficacy has a direct positive effect on ICT skills (βz2 = 0.328). Furthermore, ICT skills function as a mediating variable by mediating (6) the relationship between organizational culture and educator performance (β = 0.698), and (7) the relationship between self-efficacy and educator performance (β = 0.639). Conclusion: These findings confirm that ICT skills serve as a significant mediating construct in the relationship between organizational culture and self-efficacy on educator performance. The study recommends that PPI Curug management prioritize competency-based ICT training programs and self-efficacy enhancement strategies as integrated components of human resource development policy to improve overall educator performance in the digital era of aviation vocational education.

Design and development of a problem-based learning (PBL) e-module in environmental education for enhancing pro-environmental behaviour Nur Humairoh Umi; Rita Retnowati; Yossa Istiadi
Indonesian Journal of Applied Environmental Studies Vol. 6 No. 1 (2025): Indonesian Journal of Applied Environmental Studies
Publisher : Universitas Pakuan

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33751/injast.v6i1.26

This study aimed to develop an environmental education e-module based on the Problem-Based Learning (PBL) approach to foster pro-environmental behaviour among elementary school students. The research employed the ADDIE (Analysis, Design, Development, Implementation, and Evaluation) model, encompassing five sequential stages. The findings indicate that the PBL-based e-module on environmental change effectively enhanced pro-environmental behaviour in Grade V students. Pre-test and post-test analysis yielded an average N-gain score of 0.69 (medium category) and a percentage gain of 68.98% (quite effective category). Furthermore, assessment of pro-environmental behaviour indicators showed high achievement criteria. These results suggest that the developed e-module is both suitable for classroom use and effective in promoting pro-environmental behaviour.

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