bluuebunny/crossref_metadata_2025 huggingface dataset:
ANALISIS PENGENDALIAN BIAYA DAN WAKTU PADA PROYEK PEMELIHARAAN TROTOAR JALAN DI PROVINSI DKI JAKARTA (TROTOAR PASAR REBO) MENGGUNAKAN METODE EARNED VALUE
Authors: Nandaprasetya Shabrina , Dofir Akhmad
Published: September 2023

Pembangunan proyek konstruksi, peremajaan, dan perbaikan fasilitas umum di ibukota Jakarta semakin berkembang pesat dan sangat dibutuhkan kinerja proyek yang efektif dan efisien termasuk proyek Pemeliharaan Trotoar Jalan di Provinsi DKI Jakarta (Trotoar Pasar Rebo). Salah satu metode yang digunakan untuk pengendalian biaya dan waktu adalah metode nilai hasil (earned value), yaitu konsep menghitung besarnya biaya yang menurut anggaran sesuai dengan pekerjaan yang telah diselesaikan atau dilaksanakan dengan indikator Planned Value, Estimated Value, dan Actual Cost. Progres proyek ini dipengaruhi oleh banyak faktor, diantaranya cuaca, jam kerja, tenaga kerja, adendum, dan pekerjaan tambah kurang. Dari segi kinerja biaya, proyek ini memiliki kinerja yang kurang baik karena estimasi total biaya yang dikeluarkan melebihi biaya rencana yang ditunjukan dengan nilai Cost Variance yang bernilai negatif mencapai di minggu ke-18 dan nilai Cost Performance Index yang kurang dari 1 selama 18 minggu pengamatan dengan nilai Cost Performance Index sebesar 0,877 pada mingu ke-18. Biaya pengeluaran aktual diperkirakan lebih besar dari anggaran rencana dengan selisih sebesar 14% dari anggaran rencana. Proyek yang direncanakan selesai selama 120 hari kalender ini memiliki kinerja terhadap jadwal yang cukup baik pada minggu ke-4 sampai ke-12. Hal ini dapat dilihat dari Schedule Variance yang bernilai positif dan Schedule Performance Index yang bernilai lebih dari 1. Namun kinerja proyek memburuk di minggu ke-13 hingga ke-18 dengan nilai Schedule Vkmmariance yang negatif yaitu dan nilai Schedule Performance Index sebesar 0,840. Hal ini menandakan bahwa perlunya tindakan optimalisasi proyek agar biaya yang dikeluarkan tidak semakin membengkak dan penyelesaian proyek tidak semakin terlambat.
KAJIAN FASILITAS PEDESTRIAN PADA JALAN SILIWANGI, KOTA TANGERANG SELATAN
Authors: Asmara Jaya Satria , Ihsani Irfan , Tinumbia Nuryani
Published: September 2023

Suatu kota selalu mengalami perkembangan yang dipengaruhi oleh pertumbuhan penduduk, pertumbuhan ekonomi, dan berkembangnya sarana dan prasarana kota tersebut. Pertumbuhan penduduk yang tinggi berakibat pada peningkatan mobilitas masyarakat. Pergerakan utama manusia adalah dengan berjalan kaki, sehingga sewajarnya fasilitas untuk pejalan kaki menjadi prioritas utama dalam pembentukan sistem transportasi kota. Pada kenyataannya fasilitas pedestrian justru tidak diperhatikan keadaannya, salah satunya adalah pada koridor Jalan Siliwangi di Kota Tangerang Selatan. Tujuan dari penelitian ini adalah untuk mengevaluasi kondisi fisik fasilitas pedestrian yang dilakukan dengan tiga metode, yaitu meninjau fasilitas pedestrian di lapangan dan membandingkannya dengan ketentuan teknis yang berlaku, menggunakan analisis walkability index (WI), dan terakhir menganalisis tingkat persepsi masyarakat mengenai kepuasan dan kepentingan fasilitas pedestrian dengan customer satisfactory index(CSI) dan importance-perfomance analysis(IPA). Berdasarkan pengamatan langsung, fasilitas pedestrian di sepanjang jalan yang terdapat trotoar hanya 1,6 km dari total panjang jalan 2,6 km, dengan lebar jalur di antara 80- 120 cm serta tidak adanya fasilitas penyeberangan, secara hal ini tidak sesuai dengan ketentuan yang berlaku pada Permen PU No 03 Tahun 2014 dan No 14 Tahun 2017. Pada penilaian WI sendiri, nilai yang diperoleh sebesar 53,05 dan termasuk kategori kuning, yang berarti cukup baik untuk berjalan. Namun, berdasarkan tingkat persepsi, nilai kepuasan masyarakat hanya sebesar 49,69%, menunjukan masyarakat kurang puas terhadap fasilitas pedestrian. Berdasarkan tiga analisis tersebut, ketersediaan fasilitas penyeberangan menjadi poin yang perlu diperhatikan, selain karena tidak memenuhi ketentuan, mayoritas masyarakat juga sangat tidak puas dalam menilai fasilitas penyeberangan dan keamanan dalam menyeberang, sehingga perlu menjadi prioritas perbaikan dan peningkatannya
ANALISIS PERCEPATAN PROYEK MENGGUNAKAN METODE TIME COST TRADE OFF DENGAN PENAMBAHAN JAM KERJA DAN TENAGA KERJA
Authors: Aviyani Vinny , Dofir Akhmad
Published: September 2023

Proyek Pembangunan PKL Higienis Kementerian PUPR mengalami kendala di lapangan sehingga menyebabkan terjadinya keterlambatan pekerjaan. Sehubungan dengan hal tersebut, maka dibutuhkan peran manajemen konstruksi dalam rangka pengawasan proyek agar tercapainya hasil yang maksimal. Langkah yang dilakukan yaitu dengan merencanakan dan menganalisis estimasi waktu dan rencana anggaran biaya proyek konstruksi pada pekerjaan struktur dengan penambahan jam kerja dan tenaga kerja menggunakan metode time cost trade off agar pembangunan proyek tersebut dapat selesai tepat waktu. Hasil dari analisis didapatkan adalah estimasi waktu pelaksanaan proyek dengan metode Time Cost Trade Off adalah 155 hari kalender, lebih cepat 7 hari kalender dari normal duration (162 hari kalender). Biaya yang timbul akibat penambahan jam kerja yaitu Rp.6.729.001.682,- lebih besar Rp.822.324.128,- dari normal cost (Rp.5.906.677.554,-) dan biaya yang timbul akibat penambahan tenaga kerja yaitu Rp.5.936.467.971,-. lebih besar Rp.29.790.417,- dari normal cost (Rp.5.906.677.554,-).
ESTIMASI BIAYA STRUKTUR BANGUNAN MENGGUNAKAN BIM (BUILDING INFORMATION MODELLING)
Authors: Anggraini Refina Putri , Herzanita Ayu
Published: September 2023

Penggunaan BIM sebagai bagian dari inovasi pada proses pelaksanaan proyek diharapakan dapat membantu meminimalisir terjadinya penyebab cost overrun dalam pelaksanaan proyek konstruksi bangunan gedung khusunya di Indonesia, terutama pada pekerjaan struktur. Penggunaan BIM di Indonesia pada estimasi biaya konstruksi hanya terbatas untuk menghitung volume item pekerjaan. Salah satu aplikasi BIM yang digunakan untuk menghitung estimasi biaya pekerjaan struktur bangunan gedung yaitu menggunakan software Revit. Tujuan dari penelitian ini adalah menghitung estimasi biaya pekerjaan struktur bangunan gedung menggunakan BIM dengan memasukkan parameter baru ke dalam software BIM. Metode yang digunakan dalam penelitian terdiri dari input parameter, permodelan BIM dan perhitungan estimasi biaya pekerjaan struktur. Struktur yang dianalisis adalah struktur atas yang terdiri atas kolom, shear wall, balok dan pelat lantai. Pekerjaan struktur tersebut dimulai dari pekerjaan bekisting, penulangan dan pembetonan. Parameter input BIM akan memudahkan dalam menghitung volume dan estimasi biaya pekerjaan struktur dengan memasukkan analisa harga satuan pada setiap pekerjaan. Dari hasil perhitungan menggunakan BIM Total biaya yang dibutuhkan yaitu Rp 58,209,865,868,-.
ANALISIS PERBANDINGAN BIAYA MUTU DAN WAKTU ANTARA METODE PRECAST DAN CAST IN SITU PADA PEKERJAAN SALURAN
Authors: Refor Simon , Andreas Azaria , Tinumbia Nuryani
Published: September 2023

Drainase merupakan hal yang penting pada suatu bangunan konstruksi karena berfungsi untuk mengalirkan air permukaan ke badan air dan atau bangunan resapan sehingga tidak terjadi genangan pada bangunan konstruksi. Pada pekerjaan saluran terdapat dua metode yang biasa digunakan pada proyek konstruksi yaitu metode precast dan cast in situ. Proyek konstruksi sudah terbiasa dengan metode precast karena keuntungan yang diberikan berupa waktu pekerjaannya tidak lama. Beberapa proyek konstruksi menggunakan metode cast in situ pada pekerjaan saluran karena biaya yang di keluarkan cukup murah. Tujuan dari penelitian ini adalah untuk menganalisis perbandingan metode precast dan cast in situ pada pekerjaan saluran dari segi biaya waktu dan mutu serta memberikan saran metode yang efektif untuk diterapkan pada pekerjaan saluran. Data primer berupa informasi dari pekerja di proyek dan data sekunder berupa denah saluran serta schedule proyek. Dari data tersebut dilakukan analisis untuk mendapatkan jumlah biaya, durasi pekerjaan serta pengendalian mutu terhadap dua metode tersebut. Dari hasil analisis didapatkan bahwa pekerjaan saluran menggunakan metode cast in situ biaya yang dikeluarkan adalah Rp. 392.035.000 dengan durasi pekerjaan 480 hari dan perlunya pengawasan lebih dalam pengendalian mutu karena proses setiap pekerjaan dilakukan di proyek. Sedangkan hasil analisis pekerjaan saluran menggunakan metode precast biaya yang dikeluarkan Rp. 796.152.000 dengan durasi pekerjaan 140 hari dan pengendalian mutu yang lebih sederhana karena proses fabrikasi dilakukan di pabrik.
IDENTIFIKASI PARAMETER INPUT ESTIMASI BIAYA PADA BIM (BUILDING INFORMATION MODELING)
Authors: Malik Alam Putra Adam , Herzanita Ayu
Published: September 2023

BIM merupakan salah satu teknologi di bidang AEC (Architecture, Engineering and Construction) yang mampu mensimulasikan informasi berupa representasi digital dari karakteristik fisik dan fungsional dari suatu bangunan yang di dalamnya terkandung semua Informasi mengenai elemen-elemen bangunan tersebut yang digunakan sebagai basis pengambilan keputusan dalam kurun waktu siklus umur mulai dari konsep hingga demolisi. Salah satu kegunaan BIM adalah untuk memudahkan dalam perhitungan estimasi biaya. Sehingga pada penelitian ini akan mengindentifikasi parameter yang akan digunakan sebagai input pada BIM untuk menghitung estimasi biaya, dengan studi kasus pada pekerjaan struktur dan arsitektur Proyek Urban Home Residensial Tower B. Metode penelitian yang digunakan adalah studi literatur, mengidentifikasi parameter estimasi biaya pada BIM (Building Information Modelling). Berdasarkan hasil kajian literatur, pada pekerjaan arsitektur input paramater yang dibutuhkan adalah Analisa Harga Satuan (AHS), sedangkan pada pekerjaan struktur input paramater yang dibutuhkan adalah Analisa Harga Satuan (AHS), Massa jenis (untuk menghitung berat tulangan), Luas area bekisting (untuk pekerjaan pemasangan bekisting).
ANALISIS KEBUTUHAN RUANG TERBUKA HIJAU BERDASARKAN KEBUTUHAN OKSIGEN DI KOTA BOGOR
Authors: Osly Prima Jiwa , Mardiana Indah , Tinumbia Nuryani , Ihsani Irfan
Published: September 2023

Peningkatan jumlah penduduk di Kota Bogor menyebabkan kebutuhan ruang terbangun dari tahun ke tahun semakin meningkat, sehingga hal ini berimbas pada penurunan luas ruang terbuka hijau (RTH) di Kota Bogor setiap tahunnya. Proporsi penyediaan RTH sesuai UU No 26 tahun 2007 tentang Penataan Ruang pada wilayah perkotaan yaitu 30% dari luas wilayah kota. Kota Bogor memiliki luas wilayah ± 11.850 ha sehingga dibutuhkan 3.555 ha yang terdiri dari 20 % RTH publik ± 2.370 ha dan 10 % RTH privat yaitu ±1.185 ha. Pada tahun mendatang, untuk menghindari perubahan dari ruang terbuka hijau menjadi ruang terbangun yang semakin meningkat, dibutuhkan luasan RTH yang diprioritaskan untuk dipertahankan dengan pemenuhan RTH berdasarkan kebutuhan lainnya. Perhitungan ku6i jebutuhan RTH berdasarkan kebutuhan oksigen dilakukan dengan menggunakan metode Gerarkis 1974 yang dikembangkan oleh Wisesa pada tahun1988 dan dikembangkan kembali oleh Wijayanti pada tahun 2003. Metode analytical hierarchy process (AHP) digunakan sebagai penilaian preferensi masyarakat dalam pertimbangan pengembangan RTH di Kota Bogor, dan alat bantuan analisis yang digunakan yaitu software ArcGIS dan expert choice V.11. Proyeksi jumlah penduduk Kota Bogor pada tahun 2031 adalah 1.178.795 jiwa dan proyeksi kebutuhan RTH-nya seluas 12.809 ha. Dengan luas ruang terbuka hijau eksisting sebesar 2,031 ha, untuk memenuhi syarat minimum 30% ruang terbuka hijau di perkotaan Kota Bogor memerlukan sekitar 1,523 ha atau sekitar 12,86% penambahan ruang terbuka hijau.
IMPLEMENTASI PERMIT TO WORK SYSTEM PADA PEKERJAAN KETINGGIAN DI AREA STEAM TURBINE BUILDING PROJECT PLTGU MUARA TAWAR BEKASI
Authors: Suci Wulandhari Cahya , Dofir Akhmad , Herzanita Ayu
Published: September 2023

Pekerjaan konstruksi adalah pekerjaan Penuh dengan aktivitas dengan risiko yang cukup tinggi, seperti mengangkat benda berat, bekerja di ketinggian, dan Bekerja di ruang terbatas. Oleh karena itu, penerapan pada kesehatan dan keselamatan kerja pekerjaan konstruksi (K3) khususnya pada izin kerja perusahaan (Permit To Work), sangat penting dan sesuai peraturan perushaan yang dijalankan. Program sistem izin kerja atau Permit To Work adalah sistem otorisasi (pemberian hak) dalam bentuk tertulis formal yang digunakan untuk mengontrol jenis pekerjaan yang berpotensi bahaya. Penelitian ini bertujuan untuk mengetahui program, kesesuaian dan implementasi Permit To Work System pada Project PLTGU Muara Tawar Bekasi. Dari data tersebut dilakukan analisis dengan metode wawancara, observasi serta data sekunder untuk mendapatkan hasil kesesuaian pelaksanaan di lapangan dengan prosedur yang berlaku. Dari hasil analisis tersebut yang didapat dari pengamatan dalam pelaksanaannya lokasi secara keseluruhan Proyek PLTGU Hutama Karya Muara Tawar Bekasi telah menerapkan sistem izin kerja untuk bekerja di ketinggian yang sesuai Standar dengan Guidelines on Permit To Work (P.T.W.) Systems Association of Oil & Gas Producers. Yang memiliki persentase penurunan bahaya pekerjaan yaitu sekitar 100% yang membuktikan bahwa penerapan Permit To Work System pada Project PLTGU Muara Tawar terlaksana dengan baik.
ANALISIS PEKERJAAN TAMBAH KURANG DENGAN PERBANDINGAN BIAYA, DAN WAKTU MENGGUNAKAN METODE KONVENSIONAL DAN MENGGUNAKAN SOFTWARE BIM
Authors: Rizqa Nabila , Dofir Akhmad
Published: September 2023

Semakin pesatnya kemajuan teknologi saat ini pada proyek konstruksi menjadikan banyaknya pekembangan di dalam dunia konstruksi. Saat ini BIM (Building Information Modelling) merupakan teknologi yang sangat memiliki dampak positif pada pekerjaan konstruksi yang dapat mempelajari proyek yang akan dibangun terlebih dahulu sebelum dibangunnya konstruksi tersebut. Dalam hal ini yang melatar belakangi penulis untuk menganalisis tentang keunggulan dari aplikasi BIM ini sendiri terutama pada aplikasi Cubicost Glodon untuk dapat mengerjakan pekerjaan Variation order atau kerja tambah kurang struktur area ground floor proyek Menara jakarta dengan efektif dan efisien dibandingkan metode yang biasanya dimana menggunakan aplikasi Microsoft office excel dengan bantuan aplikasi Autocad. Penelitian ini menghasilkan kesimpulan bahwa BIM dapat mempercepat waktu pekerjaan variation order 33% dibanding dengan metode konvensional, BIM dapat mengurangi kebutuhan sumber daya manusia 80% dibandingkan dengan metode konvensional, dan pada pekerjaan variation order ini BIM menghasilkan quantity dan biaya lebih kecil 2% jika dibandingkan dengan metode konvensional. Dengan nilai akhir pehitungan variation  order yang didapat yaitu sebesar Rp2,753,063,689 dan berpengaruh terhadap nilai kontrak menjadi Rp 695,753,063,689 dengan penambahan nilai akhir perhitungan variation order, yang mulanya nilai kontrak sebesar Rp 693,000,000,000.
ANALISIS FLOOD HAZARD MAP DAN PENGARUH KARAKTERISTIK DAS TERHADAP DEBIT BANJIR
Authors: Azzahra Revina
Published: September 2023

Banjir adalah bencana alam yang sering terjadi di Indonesia, terutama didaerah yang padat penduduknya seperti didaerah perkotaan. Penyebab banjir bisa terjadi karena ulah manusia atau peristiwa alam seperti curah hujan dalam jangka waktu yang lama. Sungai Sam – sam ialah sungai yang berada di daerah kabupaten bengkalis dan salah satu sungai yang menyumbang bencana banjir. Sehingga dibutuhkan nya penelitian yang bertujuan untuk pemetaan khusus untuk titik – titik daerah rawan banjir di wilayah tersebut. Karakteristik DAS merupakan Salah satu penyebab terjadinya banjir. Pada penelitian ini karakteristik yang ditinjau yaitu kemiringan lereng, jarak aman sungai, ketinggian elevasi, tata guna lahan, jenis tanah dan curah hujan untuk menghasilkan debit banjir dan membentuk peta kerawanan banjir.  Metode yang digunakan didalam penelitian ini menggunakan perangkat software QGIS (Quantum Geological Information System) untuk pembuatan peta kerawanan banjir. Berdasarkan hasil perhitungan yang sudah dilakukan diketahui bahwa DAS Sam- sam memiliki Luas sebesar 48349 Ha tergolong DAS kecil, ketinggian DAS Sam-sam berada di antara 10 – 70 m, kemiringan lereng pada DAS Sam-sam berada di antara 8 – 15% sebesar 32,32% dari luas DAS Sam-sam yang memiliki bentuk lereng cekung, DAS Sam-sam memiliki 2 (dua) jenis tanah. Curah hujan tahunan pada DAS Sam-sam tergolong rendah sebesar 1824,9 mm/tahun. Debit puncak banjir pada Das Sam-sam kala ulang 25 dengan metode Gama I sebesar 282,78 m3/detik, sedangkan dengan metode SCS-CN sebesar 473,77 m3/detik.
ANALISIS NILAI KERUSAKAN JALAN BERDASARKAN METODE BINA MARGA
Authors: Aditya Gilang , Hermanto Dardak Achmad , Andreas Azaria
Published: September 2023

Indonesia adalah salah satu negara dengan tingkat penggunaan kendaraan bermotor tertinggi di dunia, diperkirakan sekitar 85% setiap rumah tangga memiliki setidaknya kendaraan bermotor. Dengan kondisi jalan yang baik akan memudahkan masyarakat dalam mengadakan kegiatan sosial lainnya. Jalan Serpong-Parung ini merupakan jalan provinsi, jalan ini berada pada kabupaten bogor yang menghubungkan kabupaten bogor dengan kota tangerang selatan. Dengan jalan yang menghubungkan antar kota tersebut sebagai jalan penghubung masyarakat untuk melakukan aktivitas. Titik lokasi Ruko Wijaya – Masjid Al-Ittihad dengan sepanjang 1 km merupakan segmen jalan yang mengalami cukup banyak kerusakan. Tujuan dari penelitian ini mengetahui tingkat kerusakan jalan dan perbaikan jalan dengan metode yang digunakan yaitu metode Bina Marga. Metode Bina Marga adalah metode yang menggabungkan nilai yang diperoleh dari survei LHR (Lalu Lintas Harian Rata-Rata) serta survei visual yaitu jenis kerusakan jalan yang selanjutnya diperoleh nilai kodisi jalan. Berdasarkan hasil yang diteliti didapat hasil nilai Kelas LHR Jalan yaitu kategori 4, untuk nilai kerusakan pada ruas jalan yang diteliti sebesar 2,5. Didapat nilai urutan prioritas yaitu 10,5, maka Tindakan yang diambil untuk perbaikan jalan yaitu program pemeliharaan rutin. Metode perawatan dan perbaikan untuk kerusakan jalan seperti lubang, tambalan  dan retak kotak dilakukan dengan penambalan aspal dan pemadatan. Lalu untuk kerusakan retak dapat dilakukan pengisian celah retak (crack sealing) dan perbaikan tepi kerusakan. Adapun kerusakan kegemukan dilakukan dengan dipanaskan alat pemanas khusus ditabur material halus atau pasir atau dihanguskan kemudian pemadatan. Dikarenakan pada jalan ini tingkat kerusakannya sedikit maka hanya dilakukan perawatan dengan pengaspalan ulang, sehingga tidak mengganti jenis material perkerasan jalan.
EFFECT OF MOTIVATION, SATISFACTION, WORK ETHIC AND ENVIRONMENT ON EMPLOYEE PERFORMANCE THE KLATEN REGENCY REGIONAL SECRETARIAT
Authors: Arifin Zaenal , Sudarwati Sudarwati , Istiatin Istiatin
Published: September 2023

The purpose of this research is to determine the relationship between employee performance in the Regional Secretariat of Klaten Regency and factors like motivation, job satisfaction, work ethic, and work environment.This style of research makes use of a structured quantitative study strategy. The Regional Secretariat of Klaten Regency is home to 94 employees. In this study, 94 participants were selected using the Census technique. Collecting data with the use of a worksheet. Analyses of the data were performed using statistical methods such multiple linear regression testing, F tests, t tests, and coefficients of determination.Based on the numbers, it's clear that the Regional Secretariat of Klaten Regency benefits from a healthy dose of inspiration, positivity, hard work, and a pleasant office environment. The study's findings have informed efforts by the Regional Secretariat of Klaten Regency to boost morale, productivity, and the office environment. Employee output will increase and become superior as a result of this
ANALISIS KEPUTUSAN PEMBELIAN DENGAN INOVASI PRODUK, BRAND AWARENESS DAN PRODUCT KNOWLEDGE MELALUI PURCHASE INTENTION SEBAGAI VARIABEL INTERVENING (STUDI KASUS PRODUK OLAHAN KOPI DI IKM KABUPATEN BANTAENG)
Authors: Nur Aulia , Azhari Azlan , Fitriany Fitriany
Published: September 2023

Persaingan bisnis di industri kopi yang semakin meningkat tidak hanya menjadi tantangan bagi pelaku IKM Kopi tetapi dapat menciptakan peluang untuk dapat berinovasi dan meningkatkan jumlah konsumen. Penelitian ini bertujuan untuk menganalisis pengaruh variabel Inovasi Produk, Brand Awareness dan Product Knowledge melaui Purchase Intention Sebagai Variabel Intervening di IKM Kabupaten Bantaeng. Metode penelitian ini menggunakan analisis Smart PLS dengan teknik pengambilan sampel secara purposive sampling. Hasil yang diperoleh dari penelitian ini, yaitu variable inovasi produk, brand awareness dan product knowledge berpengaruh signifikan terhadap purchase intention, brand awareness dan purchase intention berpengaruh signifikan terhadap keputusan pembelian tetapi pada variabel inovasi produk dan product knowledge berpengaruh tidak signifikan terhadap keputusan pembelian. Sementara pada variabel inovasi produk, brand awareness dan product knowledge bepengaruh signifikan terhadap keputusan pembelian melalui purchase intention. Hal ini disimpulkan bahwa variabel intervening mempunyai pengaruh besar yang dapat menghubungkan antara variabel eksogen dengan variabel endogen.
Correlation Analysis of Hardiness Personality to Work Motivation of Home Industry Employees
Authors: Prasetyo Wahyu Eko
Published: September 2023

The purpose of this study was to determine the relationship between the hardiness personality variables and work motivation in employees of home Industry. This is interesting because the majority of employees in home indrustiy have employees with different levels of education and characteristics from companies in general. This research is a quantitative research model with a correlational design, the population is taken as many as 89 people who are employees in one of the home industry production companies. Hypothesis testing in this study uses the Pearson (Product Moment) correlation technique  which is aimed at determining the relationship between the independent variable (X) of hardiness personality  and the dependent variable (Y) of work motivation. Based on the calculation of the analysis, r = 0.786 was obtained with sig = 0.000 < 0.050 which means that there is a positive relationship between  personality hardiness and work motivation. Based on the results of determining the category of hardiness personality score information from 89 subjects,  who had a hardiness personality with a low category of 12 employees or 13%, who had a medium hardiness personality  of 47 employees or 53%, and who had a  high  hardiness  personality of 30 employees or 34%. Meanwhile, based on the results of determining the category description of the work motivation score of  89 subjects, who had work motivation with a low category of 5 employees or 6%, who had moderate work motivation of 30 employees or 34%, who had high motivation of  40 employees or 45%, and who had very high work motivation of 14 employees or 16%. So that further research is expected to develop research designs to a wider format with much larger population size. The hope is that it will be able to bring up findings related to hardiness with work motivation in employees.
The Effect of Online Customer Reviews, Online Customer Ratings, and Influencers on Purchase Decisions
Authors: Agustina Sekar Ayu , Transistari Ralina
Published: September 2023

This study aims to determine the influence of online consumer reviews, online customer ratings, and influencers on purchase decisions among Shopee consumers. The sampling was conducted using a non-probability sampling technique with a purposive sampling approach. The study was carried out in November 2022, with a total sample size of 160 respondents. The criteria used to select respondents for this study were females who are Shopee account holders, have made fashion product purchases on the platform, and are aged between 18 to 25 years old. The data analysis technique used for this study was multiple linear regression. The results of this study indicates that: online consumer reviews have a positive effect on purchase decisions, online customer ratings also have a positive effect on purchase decisions, and Shopee influencers also have a positive effect on purchase decisions.
Insects Associated with Palmwine from Oil Palm (Elaeis guineensis Jacq.) In Alor, Southeastern Nigeria
Authors: EWUIM S. C. , AKUNNE C. E. , ANUMBA A. I. , ETAGA H. O. I
Published: September 2023

A study to determine the insects associated with palmwine tapped from oil palm (Elaeis guineensis, Jacq.) was conducted at three villages, namely, Ide, Okebuonye, and Umuokwu, in Alor town, southeastern Nigeria, between Feb. and Mar. 2008. Unsieved palmwine in 10 L containers were collected simultaneously from tappers at the three villages for examination. Fifteen insect species in 12 genera and eight families were recovered. Some were attracted by palmwine odour while others got trapped while foraging or prospecting for nectar, mate, oviposition site, or they accidentally dropped into the collecting gourds. Camponotus maculatus (Fab.) was the most preponderant followed by unidentified dipterous larvae, Mycodrosophilla sp., C. acvapimensis Mayr. Apis mellifera L., Cryptarcha sp., and unidentified lepidopterous larvae. Collections of A. mellifera and lepidopterous larvae were limited to Ide village. Species at low levels of abundance included Carpophilus fumatus (Boh.), C. perrisi (For.), Megaponera foetans (Fab.), Oecophylla longinoda (Latr.), Musca domestica (L.), Forficula senegalensis (Serville), Brachypeplus pilosellus (Murr.), Megalurothrips sp. and Blatella sp. Numerically higher number of insects were collected from Ide (263) compared with Umuokwu (195) or Okebunoye (181) but the differences were due to random variation.
Potential of Momordica charantia (L.) Bitter Gourd and Garlic-Pepper Spray Extracts for the Control of Myzus persicae (Sulzer) and Cercospora Leaf Spot on Pepper, Capsicum annuum (L.).
Authors: OKE O. A. , ADESEGUN E. A. , ILLOKHORIA R. O.
Published: September 2023

The trials were conducted at the National Horticultural Research Institute, lbadan, during the rainy seasons of 2007 and 2008 to determine the potential of 5 % aqueous extracts of the leaves of Momordica charantia (L.), bulb of garlic, Allium sativum (L.), plus fruit of chilli pepper, Capsicum annum (L.) [15 g : 3 gin 1 L of water l and lambda cyhalothrin (Karate x EC ; 0.5L/ ha) for controlling the green peach aphid [Myzus persicae (Sulzer)] and Cercospora leaf spot on three varieties of pepper: Kano. Katsina, and Gombe local, in a 3 x 4 factorial experiment. In the two years of study. there were insignificant varietal differences in aphid infestation and also insignificant interaction between varieties and spray treatments on aphid infestation and leaf spot severity. M charantia and garlic-pepper sprays were significantly (P=0.05) more effective in reducing the green peach aphids on pepper than lambda cyhalothrin which had mean aphid infestation score of 3.20 in 2007 and 3.13 in 2008. Sprayed plots had significantly less severe disease than the control plots. There were significant (P=0.05) varietal differences in leaf spot severity score with Katsina local variety showing tolerance (severity score of 3.98 in 2007 and 4.05 in 2008); the highest number of fruits/plant (4.97 in 2007 and 4.33 in 2008): and the highest mean weight of fruits/ plant (0.98 kg in 2007 and 0.55 kg in 2008).
Monodora myristica (Gaertn) Dunal (Myristicaceae) and Allium cepa L (Liliaceae) as Protectants Against Cowpea Seed Bruchid, Callosobruchus maculatus (F.) Infesting Stored Cowpea Seeds.
Authors: OPARAEKE A. M. , DIKE M. C.
Published: September 2023

African nutmeg [Monodora myristica (Gaertn) Dunal] and onion (Allium cepa L.) bulb powders were compared for their efficacies against stored cowpea bruchid, Callosobruchus maculatus (F.). Seed powder of African nutmeg at concentration of 6.0 g per 100 g grains of cowpea caused 16.7 %, 33.3 % and 60.0 % mortality of adult bruchid in 1, 2 and 3 days respectively, compared to 20.0 %, 46.7 % and 80.0 % mortality of adult bruchid with onion bulb powder. Powders of African nut-meg and onion bulb significantly (P< 0.05) reduced both oviposition and progeny development (F1) at all treatment levels compared to the control. African nutmeg significantly (P< 0.05) gave better protection to cowpea grains for up to four months of storage than onion bulb powder. Seed quality (colour and taste) and viability (90 and 100 %) were largely unaffected at higher concentrations of African nutmeg powder used in the study.
Sugar Syrup as Substitute. for Nectar: Effect on Production and Density of the Honeybee, Apis mellifera andemsonii (Hymenoptera: Apidae), in Artificial Beehive.
Authors: FASASI K.A. , MALA.KA S. L. O. , AMUND O. O.
Published: September 2023

The effect of sugar syrup on colonies of Apis mellifera adansonii (Hymenoptera: Apidae), in an apiary at University of Lagos, was studied and the colonies were monitored between Nov. 2001 and Oct. 2003. During this period, sugar syrup was administered as nectar substitute to Colonies A and B and colonies C and D which lacked sugar syrup served as controls. In the 1st dry season (Nov. 2001 ~ Apr. 2002), the production of colonies A and B were 35.0kg and 30.5kg and their population densities were 24,610 and 22,727, respectively, while the production of colonies C and D were 37.0kg and 40.5kg and the population densities were 27,040 and 29,790 respectively. In the I” wet season (May 2002 – Oct. 2002), colonies A and B weighed 24.5kg and 22.5kg, respectively, while their population densities were 25,360 and 23,810, respectively. Colonies C and D weighed 22.5kg and 24.0kg and their population densities were 15,846 and 22,500, respectively. Colonies A and B weighed 42.5kg and 39.0kg. and had population density of 34,770 and 33,240 respectively in the 2nd dry season (Nov. 2002 – Apr. 2003). Colonies C and D had comparatively lower production (29.5kg and 35.5kg) and population densities (25,592 and 31,634, respectively). This study showed that administration of sugar syrup to colonies of A. mellifera adansonii in wet season sustained more population of bees for foraging activities in the 2nd dry season. This significantly increased population and production in colonies A and B in the 2nd dry season.
Evaluation of Carbofuran, Chlorpyriphos and Endosulfan for the Control of Yam Beetles, Heteroligus spp. (Coleoptera: Dynastidae), in Delta State, Nigeria.
Authors: TOBIH F. O. , EMOSAIRUE S. O. , OMOLOYE A. A.
Published: September 2023

The efficacy of carbofuran (Furadan 5G), chlorpyriphos (Tricel 48EC) and endosulfan (Endocel 35EC) for the control of yam beetles (Heteroligus spp.) was evaluated in 2004 and 2005 at the Teaching and Research Farm, Faculty of Agriculture, Delta State University, Asaba Campus and at Ugbolu, a village in Oshimili North Local Government Area, Delta State, Nigeria. The experiments were laid out in randomized complete block design and the three insecticides as well as an untreated control were replicated three times. The insecticides were applied at the time of planting at the rate of 1.75kg a.i.l 2tonnes of yam setts for Furadan 5G; 1.92L a.i.l 2tonnes of yam setts for Tricel 48EC and 0.7L a.i.l 2tonnes of yam setts for Endocel 35EC. Data collected were the number of dead beetles per heap, the number, depth and diameter of feeding holes on yam (Dioscorea rotundata cv Adaka), tuber yield and percentage yield increase over control. There were significantly higher numbers of dead beetles in chlophyriphos-and endosulfan-treated plots than in carbofuran and untreated-control plots. All insecticide-treated plots had significantly lower number of feeding holes, depth of feeding holes than control at the two locations. Chlorpyriphos and endosulfan were more effective than carbofuran in reducing yam beetle damage. There were no significant differences (P>0.05) in yield of tubers in insecticide treated plots compared with control plots in 2004 and 2005 at Asaba and in 2005 at Ugbolu. However, significantly lower tuber yields were obtained in untreated control plots at Ugbolu in 2004. Application of insecticides brought tuber yield increases which ranged between 23% and 68% across the locations and in the two years of evaluation.
Re-examination of the Larva of the Mayfly Genus Compsoneuria. Eaton (Ephemeroptera: Heptageniidae) From Ile-Ife, South-western Nigeria
Authors: OGBOGU S. S.
Published: September 2023

Sequel to a recent re-evaluation of the heptageniid mayfly genus, Compsoneuria Eaton; the larva of an unknown species earlier reported from Ile-Ife was re-examined and additional diagnostic features highlighted. Compared with the descriptions of the five species of the genus that occur in the Afrotropical region, features of the larva agree with those of C. njalensis Kimmins thereby confirming the presence of the species in Nigeria. Geographical distribution of the species is briefly discussed
Study of Immature Stages of Two Flesh Flies, Sarcophaga nodosa (Enge1.) and S. exuberans (Pandelle) [Diptera: Sarcophagidae), From Uyo, South-eastern Nigeria.
Authors: EKANEM M. S. , DIKE M. C.
Published: September 2023

Two sarcophagid flies, Sarccophaga nodosa (Engel), and S. exuberans (Pandelle), which breed in animal carcases in Uyo, South-eastern Nigeria, were reared on beef through three generations in the laboratory. Mean developmental durations from larviposition to adult emergence were 30.3 ±1.3 days for S. nodosa and 15.5 ± 2 days for S. exuberans. The larvae and pupae of the two species were described and a key to the larval instars provided.
Relative Abundance and Seasonal Distribution of Adult Mosquito Species in Offa, Kwara State, Nigeria.
Authors: OLAYEMI I. K. , ANDE A. T.
Published: September 2023

The composition and seasonal population dynamics of adult mosquitoes in Offa were studied from Jan. 2001 to Dec. 2002 using human baits. Average monthly rainfall, relative humidity, and temperature were obtained from the local weather station and correlated with mosquito abundance. An annual average of 13,063 specimens belonging to five species namely: Aedes cumminsii (Theobald) (41.97%), Anopheles gambiae (Gilies) (23.10%), An. funestus (Gilies) (17.63%), Culex pipiens fatigans (Linnaeus) (14.87%) and Ae. aegypti (Linnaeus) (2.43%) were collected. The highest monthly total collection (100.90 mosquitoes/man/night) was in Aug. and the least (10.51) was in Mar. Significantly higher (ta =0.05) number of mosquitoes was collected in the rainy season (55.48 mosquitoes/man/night) compared to the dry season (14.35). Mosquito abundance was significantly and positively correlated with rainfall (r= 0.70) and relative humidity (r = 0.74) but was negatively and significantly correlated with temperature (r = -0.66). The implications for public health of the occurrence of the mosquito species as well as significance of the correlations of mosquito abundance with climatic variable in planning control measures were discussed.
A Survey of Knowledge, Attitude and Perception of Cockroach Infestation and Its Public Health implications in Makurdi, Nigeria
Authors: OMUDU E. A. , EYUMAH A. O.
Published: September 2023

The willingness to participate in cockroach control activities is said to be dependent on individual and community’s perception of the importance of cockroach infestation. Quantitative questionnaire and ranking exercise were used to determine respondents’ knowledge, perception and attitude to cockroach infestation in Makurdi, Nigeria, between Mar. and Jun. 2006. Two hundred and thirty four household heads comprising 128 (54.7%) males, 106 (45.3%) females, 80 (34.2%) civil servants, 67 (28.6%) business men and women, 57 (24.4%) farmers, and 30 (12.8%) students participated. Two hundred and six (88.0%) of the respondents reported seeing cockroaches in their houses; 98 (41.9%) considered cockroach infestation in their apartments to be low, 90 (38.6%) and 48 (20.5%) rated cockroach infestation in their apartments as moderate and high, respectively. Eighty-two (35.0%) respondents considered cockroach infestation to be a potential health risk, 92 (39.3%) did not associate cockroach infestation with any health problem, and 60 (25.6%) were not sure that cockroaches transmit diseases. There was no significant gender difference in perception of the health risk associated with cockroach infestation (t= 0.14, df’= 1, P>0.05). Cockroach was ranked fourth amongst the five household pc . red and 136 (58.1 %) of the respondents controlled cockroach infestation manually. While \ 75.2%) of the respondents reported that they felt embarrassed when visitors saw cockroaches in their homes, 58 (24.8%) said they were not embarrassed. The study revealed that the vector competence of cockroach was grossly underrated and consequently the risk of contracting cockroach-borne infections is high. There is need for further entomological investigations and community health education on health hazard associated with cockroach infestation.
Insecticidal Activity of Cleisthopholis patens (Benth) Engl and Diels (Annonaceae) Against the Stored Product Moth, Ephestia cautella (Walker) [Lepidoptera:Pyralidae], in Stored Cocoa [Theobroma cacao (L.)]Beans.
Authors: AKINNEYE J. O. , ASHAMO M. O.
Published: September 2023

The toxicity of powdered leaf, stem bark and root bark of “apako”, Cleisthopholis patens (Benth) Engl and Diels (Annonacea), to Ephestia cautella (Walker) was evaluated in the laboratory at 28±2°C and 75±5% RH. Four rates of each powder. 0.5, 1.0,2.0, and 3.0 g/20 g of cocoa [Theobroma cacao (L.)] beans. were tested in completely randomized design. The treatments and an untreated control were replicated three times. In another test, treated and untreated cocoa beans were infested with 30 one-day old E. cautella eggs and the numbers of hatched eggs (at day 3 post-infestation) and emerged adults (at day 40 postinfestation) were converted to percentages. Toxicity to adults generally increased with the rate of product application and duration post-treatment. At 24 h post-treatment, only the root bark caused mortality (22.8-45.3%). Mortality increased considerably thereafter reaching the peak (100%) at 72 h for 3.0 g root bark/20 g cocoa bean, and at 96 h for 2.0 g and 3.0 g stem bark. With the leaf powder. the highest mortality was 78.9% for 3.0 g/20 g cocoa bean. All parts of C. patens at 0.5-3.0 g/20 g cocoa beans completely inhibited egg hatch whereas on the untreated control the percentage of hatched eggs ranged between 73.4 and 96.7% and percentage adult emergence ranged between 60.0 and 90.0% .
Repositioning Insect Science for Sustainable Food Security and Economic Growth in Nigeria.
Authors: ADESIYUN A. A.
Published: September 2023

The paper defines entomology and gives the characteristics of. and reasons for studying insects. The roles played by insects at all stages of the food chain (production, processing, marketing and storage) and their impact on agriculture and sustainable food security in Nigeria are described. The areas needing reforms to reposition insect science for food security and economic growth in Nigeria include entomology curricula at all levels of education: electronic-based teaching and research in entomology: extension entomology: and pest control service. The reforms needed at the pre-college and college levels have to do more with delivery than with adequacy or relevance of the curriculum; teachers need to be more equipped with teaching aids. Whereas at the undergraduate level, the reform should include introduction of new courses such as entrepreneurship in entomology. at the post-graduate level the needed reforms are in the areas of adequacy. relevance and delivery of existing curricula. Entomological research conducted should be guided by each institution’s relative strengths in personnel and facilities. Extension entomology education should emphasize integrated pest management and the practice of pest control should no longer be left in the hands of illiterates. Finally, the paper advocates the establishment of a National Museum of Natural History to foster creation of scientific awareness among the youths. evolve a national policy on environmental conservation. and provide identification service on natural history objects.
Repellent Effects of Five Monoterpenoid Odours Against Two Stored Product Insect Pests
Authors: UKEH D. A.
Published: September 2023

Five monoterpenoids, (R)-linalool. 1,8-cineole. (S)-2-heptyl acetate, (S)-2-heptanol, and citral, which are natural components of the essential oils of Afratnomum melegueta (K. Schum) and Zingiber officinale (Roscoe), were tested at the ratios in which they occur naturally against Tribolium castaneutn (Herbst.), and Rhyzopertha dominica (Fab.) in a 4-way olfactometer. The results showed the repellent properties of the compounds as both beetles spent less time in the olfactometer arm containing the test stimuli. Linalool and (S)-2-heptanol were stronger repellent compounds than the others. With linalool, T. castaneum significantly preferred the control arms (spending 2.78 ± 0.22 min in them) compared to the test arms (1.22 ± 0.22 rnin.). For R. dominica the times spent were 2.87 ± 0.26 min in the control anTISand 0.89 ± 0.28 min in the test arm. With (S)-2-heptanol, T. castaneum spent 1.23 ± 0.27 min in the test arm compared to 2.83 ± 0.23 min in the control arms. R. dominica spent 1.61 ± 0.24 min in the test arm and 2.69 ± 0.23 min in the control arms. For the number of entries or visits made. R. dominica made significantly fewer visits to linalool-treated arm (P= 0.018) and (S)-2-heptanol treated arm (P=0.038) compared to the control arms. These compounds could be suitable as repellents or fumigants against stored product pests in a small-scale farmer level.
A Study on Enhancing the Participation of Crime Victims in Criminal Proceedings
Authors:   Korean Association of Victimology, Kim Hyeok
Published: September 2023

Despite ongoing discussions regarding the guarantee of victims' participation rights in criminal proceedings, the legal status of victims remains inadequate. Meaningful discussions on strengthening victims' participation in criminal proceedings can only take place when shifting away from a state-centric approach to a victim-centered approach. Victims can demand prevention of harm to their lives or bodies by participating in criminal proceedings, and they can also assert their right to seek recovery for the harm they have suffered as a result of the crime.
However, the current system is far from victim-centered and fails to be victim-friendly. Victims are being treated as unwelcome guests by investigative agencies, and concerns regarding harm to victims are not properly taken into account in the criminal proceedings. The victim attorney system, which can make significant contributions to the exercise of participation rights, remains inadequate. Furthermore, victims are unable to provide proper statements in criminal proceedings, and they are not adequately guaranteed their right to information about their own cases.
To address these issues, measures such as operating investigative procedures that consider the rights of victims and the perspective of recovery, prioritizing the protection of victims' right to life, expanding the victim attorney system, granting victims a quasi-party status in criminal trials, and ensuring proper guarantees of the right to information are necessary.
Limitations and improvement direction of victim protection under the Human Trafficking Prevention Act
Authors:   Korean Association of Victimology, Lee Sungdae , Song Bong Gyu
Published: September 2023

Today, slavery is prohibited in most countries. However, human trafficking is acting as a transformation that continues the legacy of slavery. Accordingly, the international community has continued various efforts to eradicate human trafficking. Efforts to prevent human trafficking have been diversified in Korea, and some legislative results can be found. Representatively, the revision of the criminal law(April 5, 2013) can be cited as an example, and the Trafficking Prevention Act enacted on April 20, 2021 and enforced on January 1, 2023 is expected to be a full-fledged starting point for the protection of human trafficking victims.
The purpose of this article is to review the Human Trafficking Prevention Act, which was enacted relatively recently for the purpose of preventing human trafficking and protecting and supporting victims of human trafficking, which has not been discussed in earnest. To this end, ① current status of human trafficking in Korea(II), ② problems of the recently enacted and enforced Human Trafficking Prevention Act(Ⅲ), and ③ ways to improve these problems(IV) were presented. Accordingly, ① the lack of data that can accurately grasp the current status of human trafficking, ② the problem of the main concept of the Human Trafficking Prevention Act, the problem of the human trafficking punishment regulation, and the problem of the victim protection procedure, The procedure for issuing a confirmation letter for victims of human trafficking, etc. was reviewed. ③ As a way to improve upon these problems, the interpretation of ‘human trafficking, etc.’ in the law, the necessity of deleting ‘crimes such as human trafficking, etc.’, and human trafficking in the criminal law The need for revision of regulations and other system improvements for early identification of victims were suggested.
Adaptive Joint Channel Estimation/Data Detection in Flexible Multicarrier MIMO Systems — A Tensor-based Approach
Authors: Kofidis Eleftherios
Published: September 2023

Multiple-input multiple-output (MIMO) systems employing multicarrier modulation (MCM), including flexible MCM that unifies a number of MCM schemes, have been well studied recently also in their tensor-based formulation. The latter naturally allows for (semi-)blind joint channel estimation/data detection (JCD), of particular interest in future generation massive MIMO systems, given the uniqueness properties of the tensor decomposition (TD) models. Of course, in the presence of time-varying channels, adaptive JCD needs to be implemented. However, the rich literature on recursive TD has only very little been considered in this context and only for orthogonal frequency division multiplexing (OFDM). In this paper, online TD is adapted to realize adaptive JCD for time-varying flexible MIMO-MCM systems. The common assumptions underlying online TD schemes are revisited on this occasion and shown to be inadequate to cope with fast-fading channels. This is demonstrated via simulation results on two of the most popular MCM systems. The results of this work can serve to motivate further study of online TD to extend its applicability in this and other demanding application contexts.
On a conjecture for the algebraic transfer in generic families of internal degrees
Authors: Võ Phúc Đặng
Published: September 2023

The binary field will be symbolized as $\mathbb F_2$ in the customary manner, whilst the Steenrod algebra over this field shall be written as $\mathscr A.$ In this paper, we study Singer's conjecture [Math. Z. \textbf{202} (1989), 493-523] for the algebraic transfers of ranks 5 and 6 in the generic families of internal degrees. The Singer algebraic transfer stands as a valuable instrument for unraveling the intricate structure of the cohomology ${\rm Ext}_{\mathscr A}^{s,k} := {\rm Ext}_{\mathscr A}^{s}(\mathbb F_2, \Sigma^{k}\mathbb F_2)$ of $\mathscr A.$ Remarkably, we have shown that the indecomposable element $y\in {\rm Ext}_{\mathscr A}^{6,44}$ is not in the image of the sixth algebraic transfer. 