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ANALISIS TINGKAT KESELAMATAN LALU LINTAS PADA SIMPANG TAK BERSINYAL DENGAN METODE TRAFFIC CONFLICT TECHNIQUE (Studi Kasus: Persimpangan Jl. Raya Mataram-Sikur, Masbagik, Kabupaten Lombok Timur, Provinsi Nusa Tenggara Barat): Analysis of Traffic Safety Level at Unsansed Intersection with Traffic Conflict Technique Method (Case Study: The Mataram-Sikur Highway Intersection, Masbagik, East Lombok Regency, West Nusa Tenggara Province) Muh. Ricki Saprollah; Ida Ayu Oka Suwati Sideman; Rohani Rohani
Spektrum Sipil Vol 9 No 2 (2022): SPEKTRUM SIPIL
Publisher : Jurusan Teknik Sipil Fakultas Teknik Universitas Mataram

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29303/spektrum.v9i2.233

Kecelakaan lalu lintas di simpang tak bersinyal diperkirakan sebesar 0,60 kecelakaan per juta kendaraan. Hal ini menandakan tujuan dalam mewujudkan transportasi yang selamat dan aman masih belum 100% tercapai. Adapun perilaku-perilaku tidak teratur pengguna jalan ketika melakukan pergerakan di persimpangan memiliki kontribusi besar menjadi penyebab kecelakaan lalu lintas tersebut. Oleh sebab itu, analisis dengan metode Traffic Conflict Technique digunakan untuk mengetahui tingkat keselamatan lalu lintas dan hubungan sebab-akibat antara perilaku tidak teratur dengan kecelakaan sehingga dapat menjadi referensi dalam mewujudkan zero accident di Persimpangan Jl. Raya Mataram â€“ Sikur, Masbagik, Lombok Timur, NTB. Hasil analisis menunjukkan, tipe serious conflict dengan gerakan memotong (crossing) menjadi konflik dominan dan perilaku percepatan ketika crossing menuju jalan minor rentan menimbulkan konflik dan kecelakaan lalu lintas. Adapun konflik dengan TA < 0,15 detik sangat beresiko menimbulkan tabrakan tipe Rear-Angle. Dengan demikian, terdapat kerusakan interaksi di simpang tersebut karena ditemukan 12 konflik serius.

PENGARUH DERAJAT KEJENUHAN TERHADAP KECEPATAN KENDARAN (STUDI KASUS PADA RUAS JALAN ADI SUCIPTO DAN JALAN BRAWIJAYA DI KOTA MATARAM): The Influence of the Degree of Saturation on Vehicle Speed (Case Study on Adi Sucipto Road and Brawijaya Road in Mataram City) Rohani Rohani; Made Mahendra; Hasyim Hasyim; Desi Widianty; Salehudin Salehudin
Spektrum Sipil Vol 9 No 2 (2022): SPEKTRUM SIPIL
Publisher : Jurusan Teknik Sipil Fakultas Teknik Universitas Mataram

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29303/spektrum.v9i2.267

Jalan Adi Sucipto dan Jalan Brawijaya merupakan ruas jalan dengan tipe jalan dua lajur dua arah tidak terbagi (2/2 UD). Jalan Adi Sucipto adalah jalan Arteri primer dan jalan Brawijaya merupakan jalan kolektor primer yang berada di Kota Mataram. Peningkatan volume lalu lintas akan berdampak terhadap kinerja lalu lintas dalam hal ini derajat kejenuhan akan berpengaruh pula terhadap kecepatan kendaraan, sehingga perlu diketahui pengaruh derajat kejenuhan terhadap kecepatan kendaraan. Hasilnya penelitian ini diharapkan menjadiÂ acuan dalam rangka perbaikan dan peningkatan kualitas jalan tersebut. Tujuan penelitian ini adalah mengetahui pengaruh derajat kejenuhan terhadap kecepatan kendaraan pada ruas jalan Adi Sucipto dan Jalan Brawijaya dengan menggunakan Manual Kapasitas Jalan Indonesia 1997. Hasil analisis diperoleh kecepatan pada jalan Adi Sucipto sebesar 34,86 km/jam, kepadatan 56,31 smp/km, kapasitas 3198,555 smp/jam, derajat kejenuhan 0,46. Pada jalan Brawijaya diperoleh kecepatan 32,34 km/jam, kepadatan 54,61 smp/km, kapasitas 3322,530 smp/jam, derajat kejenuhan 0,44. Pengaruh derajat kejenuhan terhadap kecepatan kendaraan pada jalan Adi Sucipto dan jalan Brawijaya sangat kuat, ditunjukkan dengan (r) yang berada pada rentang 0,9 < r <1. Persamaan yang diperoleh dari hubungan antara derajat kejenuhan terhadap kecepatan kendaraan pada jalan Brawijaya adalah y = 389,9x2 â€“373,91x + 116.39 dengan nilai rÂ² = 0.968 atau pengaruhnya sebesar 96,8%, dan pada jalan Adi sucipto adalah y= 177,23x2â€“180,72x +72,321 dengan pengaruhnya sebesar 92,1%.

Effect of The Addition of Hyacinths as Feed to Increase The Production of Earthworms (Lumbricus rubellus) Rohani Rohani; Karnan Karnan; Mohammad Liwa Ilhamdi
Jurnal Biologi Tropis Vol. 22 No. 3 (2022): July - September
Publisher : Biology Education Study Program, Faculty of Teacher Training and Education, University of Mataram, Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29303/jbt.v22i3.3816

Water hyacinth (Eichhornia crassipes) is one of Indonesia's wild plants which is considered a weed because of its rapid growth that can cause environmental problems. Generally, water hyacinth control is carried out physically/conventionally by throwing it away or burning it, causing new environmental problems. Water hyacinth has a high organic matter content, therefore water hyacinth can be used as an alternative feed to increase the production of earthworms. This study aims to determine the effect of adding water hyacinth as feed to increasing the production of earthworms (Lumbricus rubellus).This study aims to determine the effect of adding water hyacinth as feed to increasing the production of earthworms (Lumbricus rubellus). The research was conducted in the Dasan Dao hamlet, Ranggagata Village, Southwest Praya District, Central Lombok Regency, in the researcher's private house for 60 days. This type of research is an experimental research. The research design used was a completely randomized design with 4 treatments and 4 replications. Treatments were P0 (0 grams of water hyacinth), P1 (50 grams of water hyacinth), P2 (100 grams of water hyacinth), P3 (150 grams of water hyacinth). Parameters observed were the number and weight of earthworms. The results showed that the treatment had a significant effect on the weight and number of earthworms (P<0.05). The results of the treatment on the number of earthworms P0;P1;P2;P3 were 84;93.75;117.25;127.5 and the weight of earthworms was 85;102.5;118.75;124.75. The highest number and weight of earthworms were found in the P3 treatment (150 g of water hyacinth). The conclusion of this research is the addition of water hyacinth as feed can increase the number and weight of earthworms.

TINJAUAN HAMBATAN SAMPING, KAPASITAS DAN TUNDAAN LALU LINTAS PADA SIMPANG TIDAK BERSINYAL DIKOTA MATARAM ROHANI ROHANI; HASYIM HASYIM
GANEC SWARA Vol 17, No 1 (2023): Maret 2023
Publisher : Universitas Mahasaraswati K. Mataram

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35327/gara.v17i1.365

On several roads in the city of Mataram, such as the Dr. Wahidin road, there are many shops that do not have enough parking space, so many vehicles are parked on the shoulder of the road and even on the road. The presence of pedestrians crossing the road and the activity of vehicles entering/exiting the road affect the speed of traffic, and the capacity of the road so that at certain hours there are frequent traffic jams. This of course will have an impact on the delay at the intersection of Dr. Wahidin. As for the Caturwarga street, there are schools, hospitals and shops that do not have sufficient parking space, many vehicles that drop off and pick up passengers and vehicles that enter and leave the land use side of the road. Of course, this condition affects the smooth flow of traffic, so it has an impact on delays at the Catur Warga intersection. This study analyzes side resistance, capacity and delay at unsignalized intersections on Caturwarga and Dr. Wahidin roads. The total of this side resistance will be used to analyze how much influence it has on the delay using the 1997 MKJI method. The results of the analysis at the Catur Warga intersection have side friction, and the delays are 790.7 events/hour, 16.63 seconds/smp. Meanwhile, at the Dr. Wahidin intersection, the side friction and delays are 403.1 events/hour and 17.00 seconds/pcu, respectively. From the results of regression analysis, side barriers affect traffic delays by 89.7% and at Dr. Wahidin intersections by 79.7%. Partially at the Catur Warga intersection, the side friction variable that has the most influence on delays is Exit/Entrance Vehicles on the land use side of the road (EEV). On the Dr. Wahidin road, the side obstacle variable that has the most influence on delays is Pedestrians (PED).

PENGARUH HAMBATAN SAMPING TERHADAP KINERJA RUAS JALAN SATU ARAH DAN DUA ARAH TANPA MEDIAN DI KOTAMADYA MATARAM HASYIM HASYIM; ROHANI ROHANI
GANEC SWARA Vol 17, No 1 (2023): Maret 2023
Publisher : Universitas Mahasaraswati K. Mataram

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35327/gara.v17i1.382

Street Catur Warga and Dr. Wahidin did not have enough stops, so many vehicles stopped on the shoulder of the road and parked on the side of the road. The number of people crossing the road and the number of vehicles entering/exiting the road causes a reduction in the speed, volume and capacity of the road so that at certain hours traffic jams often occur. This study analyzed the side friction, volume and speed of Catur Warga and Jalan Dr. Wahidin used the 1997 MKJI method. The results of the analysis on one-way roads, especially the Catur Warga road, had side friction, volume and speed respectively, namely 790.7 events/hour, 1533.75 smp/am and 46.08 km/hour. While the two-way street, Jalan Dr. Wahidin, has side friction, volume and speed of 403.1 events/hour, 1916.15 smp/hour and 38.58 km/hour. From the results of the regression analysis, side friction is very influential on the volume and speed of traffic. This can be seen from (r) in the range of 0.7 < r < 0.9 where the number shows a strong influence and 0.9 < r < 1 indicates a very strong influence. The results of partial regression analysis show that on the Catur Warga road, the side barriers that have the most influence on volume are Parking and Vehicle Stops (PSV), while at speed, namely Vehicles Exiting/Entering Roadside Land Use (EEV). On the Dr. Wahidin the side friction variable that has the most influence on volume is Pedestrians (PED), while at speed, namely Parking and Vehicle Stops (PSV).

Pengaruh Kadar Aspal Efektif dan Tebal Selimut Aspal Terhadap Proporsi Rongga pada Campuran Laston: Influence of Effective Asphalt Content and Film Thickness on Voids Proportion of Asphalt Concrete Ratna Yuniarti; Made Mahendra; Hasyim Hasyim; Rohani Rohani; I A O Suwati Sideman
JURNAL SAINS TEKNOLOGI & LINGKUNGAN Vol. 9 No. 1 (2023): JURNAL SAINS TEKNOLOGI & LINGKUNGAN
Publisher : LPPM Universitas Mataram

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29303/jstl.v9i1.410

In the mixing process between asphalt and aggregate, absorption of asphalt by the aggregate occurs through the pores of the aggregate. The volume of asphalt not absorbed by the aggregate can be defined as effective asphalt content which determines the percentage of airspaces in the compacted mix. The proportion of voids formed in the mixture contributes to the durability of the mixture against temperature and climate conditions. This study aims to examine the effect of effective asphalt content and the asphalt film thickness on the voids proportion in asphalt mixture. Based on the analysis, it can be concluded that the particle size distribution of the aggregate affects the total surface area of the aggregate in the mixture and the pores of the aggregate affect the effective percent of asphalt content. Aggregate with a small grain size produced a larger total surface area of aggregate. Meanwhile the use of aggregate with small pores produced a higher effective percent of asphalt content. The higher the effective asphalt content and the asphalt film thickness, the larger the voids in mineral aggregate and the voids filled with bitumen. In contrast, the voids in the mixture decreases with increase the effective asphalt content and the asphalt film thickness. In all the voids proportions analyzed, the effective asphalt content and the asphalt film thickness have a very significant effect.

PELATIHAN PEMBUATAN PANEL GEOPOLIMER FLY ASH DI DESA SURANADI SEBAGAI PENGGANTI PAPAN KAYU I Dewa Made Alit Karyawan; Ery Setiawan; Rohani Rohani; Ida Ayu Oka Suwati Sideman; I Gede Putu Warka
Jurnal Abdi Insani Vol 10 No 2 (2023): Jurnal Abdi Insani
Publisher : Universitas Mataram

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29303/abdiinsani.v10i2.957

The problem found is the high price of raw materials and homestay furniture. It's hard to get quality wood planks at low prices. On the other hand, public knowledge is still limited in finding products as substitute materials at low prices. So construction tends to use materials of poor quality, the important thing is that the price is affordable. So the life of buildings and furniture becomes shorter and is not good from an aesthetic point of view. Based on these problems, a solution is sought that refers to the priorities that have been set, namely the innovation of cheap panel/board products by utilizing waste (fly ash). The method adopted is to provide training to builders on how to make panels from geopolymer fly ash. Thus, the purpose of the community service program carried out by the LPPM Unram Community Service Team is to provide skills to carpenters in making boards/panels from geopolymer fly ash. The method used is to provide training. The training emphasizes the ability to hone participants' skills in choosing materials, mixing materials according to composition, and printing geopolymer paste into panels (boards). The training covers work procedures and stages of technology application. At the end of each activity, an evaluation is carried out so that it can be seen what the achievements and shortcomings are. Activities range from socialization, training preparation, and training implementation to implementation evaluation. As a result, after attending the training, the participants were able to make geopolymer panels (boards) made from fly ash and alkaline. add insight and knowledge and skills. This can be seen from the ability of the training participants (builders and hotel managers) based on the materials and examples provided during the training.

ANALISIS PERBANDINGAN NILAI DERAJAT KEJENUHAN MENGGUNAKAN MODEL GREENSHIELD, GREENBERG DAN UNDERWOOD TERHADAP MKJI 1997 PADA JALAN PERKOTAAN TIPE 2/2 UD (STUDI KASUS RUAS JALAN SALEH SUNGKAR AMPENAN KOTA MATARAM) ROHANI ROHANI; HASYIM HASYIM
GANEC SWARA Vol 17, No 3 (2023): September 2023
Publisher : Universitas Mahasaraswati K. Mataram

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35327/gara.v17i3.554

If the population increases and the total traffic flow also increases without being matched by an adequate increase and improvement of road infrastructure, it will result in an increase in the degree of saturation which is a parameter in determining the performance of a road section. One of the roads affected by the population growth is the Saleh Sungkar road which is an urban road type 2/2 UD. The Greenshield, Greenberg and Underwood models are the 3 models used to determine the relationship between volume (flow), speed (speed) and density (density). The relationship between flow, speed and density is used to determine or determine the mathematical value of the capacity of a road section and the degree of saturation. This study aims to determine the comparison of the degree of saturation of Jalan Saleh Sungkar which is an urban road using the Greenshield, Greenberg and Underwood models against MKJI 1997. From the results of the analysis, it was obtained that the degree of saturation using the Indonesian Road Capacity Manual (MKJI 1997) was 0.53, so Jalan Saleh Sungkar was at the level of sevice "C" (stable flow, but the speed and motion of the vehicle were controlled, the driver was limited in choosing the speed). Meanwhile, the degree of saturation based on the Greenshield model is 0.55, the Greenberg model is 0.72 and the Underwoods model is 0.60. Both MKJI 1997 and the three models are still at level of service "C".

ANALISIS PERBANDINGAN NILAI DERAJAT KEJENUHAN MENGGUNAKAN MODEL GREENSHIELD, GREENBERG DAN UNDERWOOD TERHADAP MKJI 1997 PADA JALAN PERKOTAAN TIPE 2/2 UD (STUDI KASUS RUAS JALAN SALEH SUNGKAR AMPENAN KOTA MATARAM) ROHANI ROHANI; HASYIM HASYIM
GANEC SWARA Vol 17, No 3 (2023): September 2023
Publisher : Universitas Mahasaraswati K. Mataram

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35327/gara.v17i3.554

If the population increases and the total traffic flow also increases without being matched by an adequate increase and improvement of road infrastructure, it will result in an increase in the degree of saturation which is a parameter in determining the performance of a road section. One of the roads affected by the population growth is the Saleh Sungkar road which is an urban road type 2/2 UD. The Greenshield, Greenberg and Underwood models are the 3 models used to determine the relationship between volume (flow), speed (speed) and density (density). The relationship between flow, speed and density is used to determine or determine the mathematical value of the capacity of a road section and the degree of saturation. This study aims to determine the comparison of the degree of saturation of Jalan Saleh Sungkar which is an urban road using the Greenshield, Greenberg and Underwood models against MKJI 1997. From the results of the analysis, it was obtained that the degree of saturation using the Indonesian Road Capacity Manual (MKJI 1997) was 0.53, so Jalan Saleh Sungkar was at the level of sevice "C" (stable flow, but the speed and motion of the vehicle were controlled, the driver was limited in choosing the speed). Meanwhile, the degree of saturation based on the Greenshield model is 0.55, the Greenberg model is 0.72 and the Underwoods model is 0.60. Both MKJI 1997 and the three models are still at level of service "C".

PERBANDINGAN TINGKAT KEPATUHAN PROTOKOL COVID-19 OPERATOR OJEG ONLINE DAN OJEG KONVENSIONAL DI KOTA MATARAM I WAYAN SUTEJA; SURYAWAN MURTIADI; ROHANI ROHANI; I GDE PUTU WARKA; HARTANA HARTANA
GANEC SWARA Vol 16, No 1 (2022): Maret 2022
Publisher : Universitas Mahasaraswati K. Mataram

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35327/gara.v16i1.279

Transportation in general has a major influence on individuals, society, economic development, and socio-politics of a region. Operational aspects must be planned properly so that online motorcycle taxi services and conventional motorcycle taxis can carry out their functions as Modern City Transportation economically, efficiently and effectively. In this post-pandemic period, we know that there are differences in the characteristics of online motorcycle taxis and conventional motorcycle taxis in providing services to their users.By conducting survey research based on the level of explanation is descriptive research, to obtain characteristic data the researcher has distributed questionnaires to 400 respondents who are online motorcycle taxi users and 400 respondents who are conventional motorcycle taxi users. The two characteristics turned out to be quite similar to each other. The total population of motorcycle taxi users is 486,715 (Mataram City in figures, 2019). By using the formula for calculating the number of samples from Slovin (Statistical Formula, 2012) and a 95% confidence level, the total sample size is 400 respondents.The results of the synthesis of these two characteristics can be conveyed as follows: Gender of users is dominated by women as much as 58.8%, the purpose of the trip is dominated by work and shopping trips 51.87%, the mode before switching is dominated by motorcycle modes as much as 59.5%, connecting trips The distance to the base is dominated by a distance of 0-1 km, the connecting trip from the stop to the destination is dominated by a distance of 0-1 km using walking mode

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