scholarly journals KINERJA PERALATAN BONGKAR GENERAL CARGO (STEEL BILLET) PADA MV.HARMONY SW OLEH PT BINTANG MUSTIKA SAKTI DI PELABUHAN CIWANDAN BANTEN

2021 ◽  
Vol 23 (1) ◽  
pp. 26-31
Author(s):  
Himawan Aditya ◽  
Siska Nur
Keyword(s):  
Terminal Point ◽  
Steel Billet ◽  
General Cargo

Semakin berkembangnya teknologi bongkar muat menuntut pelabuhan dalam meningkatkan kualitas peran dan fungsinya sebagai terminal point bagi barang dan kapal. Untuk menunjang kelancaran pelayanan proses bongkar muatan, tentu saja memerlukan peralatan bongkar muat yang layak digunakan baik peralatan mekanis maupun non-mekanis.. Metode yang digunakan : jenis data primer dan sekunder, metode pengumpulan data menggunakan observasi, interview dan dokumentasi. Dalam pelaksanaannya, proses pembongkaran general cargo (steel billet) pada MV Harmony SW yang ditangani oleh PBM PT Bintang Mustika Sakti berjalan dengan lancar dan memadai. Kinerja peralatan bongkar steel billet yang dilaksanakan oleh PBM PT Bintang Mustika Sakti pada kapal MV Harmony SW di Pelabuhan Ciwandan-Banten sudah sangat baik. Kinerja perhitungan pengangkutan muatan dari dalam palka ke dermaga menggunakan ship’s crane dapat dilakukan selama 5 menit dan dalam 1 jam mampu mengangkat 60 muatan. Waktu yang dibutuhkan untuk membongkar 4.823 pcs steel billet kurang lebih selama 81 jam, didukung pula dengan pemindahan muatan menggunakan forklift dari dermaga ke atas kapal dapat dilakukan dalam waktu 2 menit. Serta kendaraan truk pengangkut yang digunakan untuk mengangkut muatan dari dermaga ke gudang penumpukan dengan jarak tempuh 17 km dan kecepatan rata-rata 50 km/jam dapat ditempuh dengan waktu 34 menit sehingga proses pengangkutan muatan dapat berjalan dengan baik.

MONITORING OF OPERATIONAL LOGISTIC PROCESSES IN GENERAL CARGO WAREHOUSES USING PREDICTIVE ANALYSIS

2019 ◽  
Vol 13 (1) ◽  
pp. 27-36
Author(s):  
Andreas Neubert
Keyword(s):  
Data Mining ◽  
Human Error ◽  
Predictive Analysis ◽  
Data Mining Algorithm ◽  
It Infrastructure ◽  
Monitoring Procedure ◽  
Manual Recording ◽  
Mining Tool ◽  
General Cargo ◽  
Different Characteristics

Due to the different characteristics of the piece goods (e.g. size and weight), they are transported in general cargo warehouses by manually-operated industrial trucks such as forklifts and pallet trucks. Since manual activities are susceptible to possible human error, errors occur in logistical processes in general cargo warehouses. This leads to incorrect loading, stacking and damage to storage equipment and general cargo. It would be possible to reduce costs arising from errors in logistical processes if these errors could be remedied in advance. This paper presents a monitoring procedure for logistical processes in manually-operated general cargo warehouses. This is where predictive analysis is applied. Seven steps are introduced with a view to integrating predictive analysis into the IT infrastructure of general cargo warehouses. These steps are described in detail. The CRISP4BigData model, the SVM data mining algorithm, the data mining tool R, the programming language C++ for the scoring in general cargo warehouses represent the results of this paper. After having created the system and installed it in general cargo warehouses, initial results obtained with this method over a certain time span will be compared with results obtained without this method through manual recording over the same period.

scholarly journals A Theoretical Analysis of Relations between Pressure Changes along Xylem Vessels and Propagation of Variation Potential in Higher Plants

Plants ◽  
2021 ◽  
Vol 10 (2) ◽  
pp. 372
Author(s):  
Ekaterina Sukhova ◽  
Elena Akinchits ◽  
Sergey V. Gudkov ◽  
Roman Y. Pishchalnikov ◽  
Vladimir Vodeneev ◽  
...  
Keyword(s):  
Higher Plants ◽  
Initial Point ◽  
Electrical Signal ◽  
Terminal Point ◽  
Hydraulic Pressure ◽  
Long Distance ◽  
Variation Potential ◽  
Damaged Zone ◽  
Pressure Dynamics ◽  
The Impact

Variation potential (VP) is an important long-distance electrical signal in higher plants that is induced by local damages, influences numerous physiological processes, and participates in plant adaptation to stressors. The transmission of increased hydraulic pressure through xylem vessels is the probable mechanism of VP propagation in plants; however, the rates of the pressure transmission and VP propagation can strongly vary. We analyzed this problem on the basis of a simple mathematical model of the pressure distribution along a xylem vessel, which was approximated by a tube with a pressure gradient. It is assumed that the VP is initiated if the integral over pressure is more than a threshold one, taking into account that the pressure is transiently increased in the initial point of the tube and is kept constant in the terminal point. It was shown that this simple model can well describe the parameters of VP propagation in higher plants, including the increase in time before VP initiation and the decrease in the rate of VP propagation with an increase in the distance from the zone of damage. Considering three types of the pressure dynamics, our model predicts that the velocity of VP propagation can be stimulated by an increase in the length of a plant shoot and also depends on pressure dynamics in the damaged zone. Our results theoretically support the hypothesis about the impact of pressure variations in xylem vessels on VP propagation.

Minimum Energy Control of a Unicycle Model Robot

2021 ◽  
Author(s):  
Youngjin Kim ◽  
Tarunraj Singh
Keyword(s):  
Optimal Control ◽  
Minimum Energy ◽  
Kinematic Model ◽  
Elliptic Functions ◽  
Terminal Point ◽  
Jacobi Elliptic Functions ◽  
Differential Drive ◽  
Terminal Constraints ◽  
Differential Drive Robot ◽  
Point To Point

Abstract Point-to-point path planning for a kinematic model of a differential-drive wheeled mobile robot (WMR) with the goal of minimizing input energy is the focus of this work. An optimal control problem is formulated to determine the necessary conditions for optimality and the resulting two point boundary value problem is solved in closed form using Jacobi elliptic functions. The resulting nonlinear programming problem is solved for two variables and the results are compared to the traditional shooting method to illustrate that the Jacobi elliptic functions parameterize the exact profile of the optimal trajectory. A set of terminal constraints which lie on a circle in the first quadrant are used to generate a set of optimal solutions. It is noted that for maneuvers where the angle of the vector connecting the initial and terminal point is greater than a threshold, which is a function of the radius of the terminal constraint circle, the robot initially moves into the third quadrant before terminating in the first quadrant. The minimum energy solution is compared to two other optimal control formulations: (1) an extension of the Dubins vehicle model where the constant linear velocity of the robot is optimized for and (2) a simple turn and move solution, both of whose optimal paths lie entirely in the first quadrant. Experimental results are used to validate the optimal trajectories of the differential-drive robot.

Inclusions, lining materials and nozzle clogging during middle carbon steel billet continuous casting process

2008 ◽  
Vol 105 (2) ◽  
pp. 72-79 ◽  
Author(s):  
Shihong Liu ◽  
Xinhua Wang ◽  
Xiangjun Zuo ◽  
Yufeng Wang ◽  
Lifeng Zhang ◽  
...  
Keyword(s):  
Carbon Steel ◽  
Continuous Casting ◽  
Casting Process ◽  
Continuous Casting Process ◽  
Nozzle Clogging ◽  
Steel Billet ◽  
Billet Continuous Casting

scholarly journals Analisis Risiko Keselamatan dan Kesehatan Kerja pada Proses Produksi Steel Billet di PT. San Xiong Steel Indonesia Tahun 2019

2021 ◽  
Vol 10 (1) ◽  
pp. 85-95
Author(s):  
Bella Nitia Pelga ◽  
Nova Muhani
Keyword(s):  
Hazard Analysis ◽  
International Labour Organization ◽  
Steel Billet

International labour organization (ILO) mencatat 1 pekerja di dunia meninggal setiap 15 detik karena kecelakaan kerja. Angka kecelakaan kerja di Indonesia pada tahun 2017 sebesar 123.000 kasus kecelakaan kerja. PT San Xiong Steel Indonesia bergerak di sektor besi baja. Bahan baku pembuatan besi baja yang digunakan adalah scrap yang di proses melalui proses pemilahan scrap, cooking scrap, analisis laboraturium dan pencetakan. Adanya pemberitaan tentang kecelakaan kerja yang dialami karyawan PT San Xiong Steel Indonesia menjadi alasan bagi peniliti untuk memilih PT San Xiong Steel Indonesia. Tujuan penelitian ini adalah mengetahui tingkat risiko keselamatan dan kesehatan kerja pada proses produksi steel billet di PT San Xiong Indonesia. Jenis penelitian yang digunakan adalah penelitian deskriftif observasional untuk mengidentifikasi bahaya dan menganalisis risiko kecelakaan kerja. Subyek penelitian dalam skripsi ini sebanyak 11 informan. Identifikasi bahaya menggunakan teknik job hazard analysis (jha) dan analisa risiko menggunakan teknik semi kuantitatif yang mengacu pada standar as/nzs 4360:2004 yang mengalikan nilai consequence, exposure, likelihood untuk menentukan tingkat risiko. Hasil penelitian yang didapatkan yaitu dengan tingkat risiko acceptable sebanyak 10 risiko (28%), priority 3 sebanyak 11 risiko (30%) dan 15 risiko (42%) pada tingkat substantial. Saran yang dapat diberikan yaitu melakukan pengukuran pajanan bising, pelatihan ergonomi, menambah alat pelindung diri (apd) sesuai dengan jumlah pekerja dan menambah safety sign.Kata kunci : as/nzs 4360:2004, konsekuensi, pajanan, kemungkinan, level risiko.

scholarly journals ZEEBRUGGE'S MAIN BREAKWATERS

1982 ◽  
Vol 1 (18) ◽  
pp. 105
Author(s):  
L.V. Van Damme
Keyword(s):  
Water Depth ◽  
Wave Breaking ◽  
Economic Benefit ◽  
Environmental Design ◽  
The West ◽  
Stability Performance ◽  
Final Design ◽  
Technical Risks ◽  
General Cargo ◽  
Concrete Cube

The design scheme of the Zeebrugge Outer Harbour, Belgium, consists mainly of two breakwaters protruding into the sea as far as 1,750 m beyond the existing mole or 3.000 m out from the coastline. The west outer breakwater is 4,450 m long, the east breakwater runs 4,300 m out from the seafront. The east outer harbour will accommodate terminals for liquid bulk products such as LNG. The west outer harbour will provide space to install two harbour bassins to suit general cargo, hazardous cargo, container and ferry traffic. In the paper emphasis is put on the environmental design conditions (wave height, wave period, water depth), the development of preliminary designs and the final design. Some design features such as dimensions, wave breaking carpet, armour units, workable limits in respect to rock grade, etc ... are discussed. By developing the design the rubble-mound breakwater has been judged to be the only viable alternative versus the caisson type breakwater, taking into account costs, technical risks, construction problems and flexibility under changing environmental conditions. The main feature of the breakwaters is that a huge concrete parapet will have been avoided. A so called flat semi-cube armour unit has been developed. The main advantage lies in the substantial economic benefit whilst maintaining the same stability performance as a concrete cube armour unit.

scholarly journals New Marine Transport System for General Cargo

1979 ◽  
Vol 1979 (146) ◽  
pp. 357-364
Author(s):  
Masaru Inoue ◽  
Ken Iwai ◽  
Koichi Sawada ◽  
Yoshio Shimada ◽  
Hiroshi Koyama
Keyword(s):  
Transport System ◽  
Marine Transport ◽  
General Cargo

scholarly journals Modifikasi Perencanaan Dermaga General Cargo dengan Kapasitas Kapal 10.000 DWT di Kabupaten Sampang, Madura

2017 ◽  
Vol 15 (1) ◽  
pp. 11
Author(s):  
Chomaedhi Chomaedhi ◽  
Raden Buyung Anugraha Affandhie ◽  
Dunat Indratmo ◽  
Daniar Rissandy
Keyword(s):  
General Cargo
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