bluuebunny/crossref_metadata_2025 huggingface dataset:
Contemporary conservation doctrine - issues of conservation protection zones based on the example of Tarnobrzeg
Authors: Gosztyła Marek , Mikrut Agata
Published: July 2018

The paper concerns the issue of conservation protection covering the researched areas of Tarnobrzeg. In particular, it describes the principles of delimiting areas and grounds for narrowing the previously adopted preservation zones. Based on reliable analyses, one presents the fundamentals, which result in the necessity of modifying and verifying the protection zones. The reasons for such a proceeding arise from the continuous development of civilization. Together with this, it is necessary to update urban areas, which is why the conservation works protecting the historic urban fabric should not stand in the way of modern urban development. Present-day conservation doctrine cannot seek to inhibit the almost natural process of the transformation of urban structures. Doctrines should correspond with contemporary realities and create opportunities for the urban and architectural development of the urban space while respecting and exposing historic architecture. The rational application of conservation doctrines and undertaking activities in a substantive manner will allow the creation of multilayer city compositions that represent an architectural depiction of history. The described issue of conservation protection zones in Tarnobrzeg is to be a form of discussion on the application of applicable conservation doctrines in the reality of contemporary cities. The question, whether the objectives and methods of action arising from the adopted conservation theory fulfil their basic function today, seems to be one of the most important issues of contemporary conservation of monuments. Since there is no doubt that finally clarified conservation decisions, formulated without thorough analysis and research, may and do result in not always expected architectural solutions.
The environmental impact of municipal waste management systems
Authors: Grzesik Katarzyna
Published: July 2018

An efficient and effective waste management system is one of the key issues for urban areas. Such a waste management system should be effective and economically viable with minimal environmental impact. The Life Cycle Assessment (LCA) methodology is an effective tool for identifying and assessing environmental impacts, it also enables comparing alternative waste management options. The aim of this study is to identify and assess the environmental impacts caused by the waste management system of mixed municipal waste for the city of Krakow for the year 2017. Three scenarios are evaluated for mixed waste: 1) incineration in a new waste-to-energy plant, 2) mechanical-biological treatment (MBT), ballast and stabilized waste is landfilled, refuse derived fuel (RDF) is produced but not incinerated, 3) treatment in the MBT plant, with incineration of RDF in the waste-to-energy plant. The results of modelling show that all scenarios exert a negative impact on the environment in some impact categories, while in other categories - a positive impact. Taking into account the values in all impact categories, the scenario with the lowest overall environmental impact is MBT with incineration.
Geoengineering conditions of the environmental protection facilities in the centre of the Oder River
Authors: Hudak Magda , Kołodziejczyk Urszula , Kostecki Jakub
Published: July 2018

The ongoing management of river valleys has had a negative impact on the effectiveness of flood protection of former floodplains. The risk of flooding and flood damage is constantly increasing. As a result of disorganized industrialization, we are dealing with the accumulation of precipitation which flows much faster from the catchment area to the main river. In turn, due to erosion and the sedimentation processes, the capacity of the main river bed and its tributaries is limited. The solution to the problem may be multidirectional flood control measures, which were designed for the Lubuskie part of the Oder River, from Nowa Sól to Milsko. They concern: the construction of a flood wall in Nowa Sól, the modernization of the flood embankments in the Nowa Sol area and reconstruction of the former floodplain in Milsko. The paper presents the geoengineering conditions of these projects.
Revitalization of the Narrow-Gauge Żuławy Commuter Railway and its effect on shipping conditions in the Vistula delta
Authors: Jerzyło Patrycja , Wawrzyńska Aleksandra , Bolt Adam
Published: July 2018

The article presents the Żuławy Access Railway and the effect of its revitalization on the change of navigational conditions in the Vistula delta. One of the problems analyzed in the article is the intersection of two different transport branches - the inland waterway and rail transport branches. A solution to the problem of their functioning is presented, without any major restrictions. Possible changes in navigational conditions have been described on Martwa Wisła and Przekop Wisły after revitalization of a narrow-gauge railway. The aim of the work is to indicate the optimal solution, taking into account the needs, benefits and possible limitations, and the method of their leveling. The current conditions prevailing in the Vistula delta have been described, obstacles and navigational difficulties, as well as the intensity of unit traffic have been characterized.
Algae in urban water bodies - control of growth and use as a biomass
Authors: Kalinichenko Antonina , Pisarenko Pavlo , Kulyk Maksym
Published: July 2018

Enhancing the ecology security of Ukraine and other developing countries is predetermined by the environmental problems of cities. It prompts studies on the contamination of city's and adjacent water bodies. The control of blue-green algae distribution and the use of its biomass for production of the biofuels, energy, oils, medicine, etc. is one of the contributing factors to the well-balanced development of infrastructure of cities. The intensity of the processes of eutrophication and the species composition of the algae, which cause algal blooming, was investigated based on data of the Vorskla River in Poltava city (Ukraine). Relevant methods, statistical data of Ukrainian Environmental Service, personal observations, laboratory analysis and analytical studies were applied for the study. The comparative estimation of influence of separate biogenic and chemical substances on eutrophication processes was carried out. The approaches for prevention of processes of water bloom have been presented. The mechanism of using the species composition of algae as an indicator of the state of eutrophication processes was studied.
Technological aspects of GEOSECMA for ArcGIS and EPANET integration - case study
Authors: Kalinowski Maciej , Grzelak Daniel
Published: July 2018

In general, GEOSECMA for GIS (GfA) and the EPANET hydraulic model are complementary tools from a technological, financial and operational point of view. It is in this way, that water companies can reduce substantial time and money, and provide extensive capability to support decisions in the planning, operation, management and the expansion of water distribution systems. This paper is an attempt to formulate technological assumptions and methodology for GfA-EPANET integration using the example of the water distribution network serving Ząbki, a medium-sized city in the Warsaw metropolitan area. This integration is understood as the process of the spatial physical and water demand data exchange between GfA and the water distribution hydraulic model with a structure tailored to the needs of water meter reading systems.
The use of photovoltaics and electric vehicles for electricity peak shaving in office buildings
Authors: Krzywda Magdalena , Jurasz Jakub , Mikulik Jerzy
Published: July 2018

The use of electric vehicles and photovoltaics is perceived as a viable option to reduce the human impact on the natural environment. This paper investigates the opportunity of managing a fleet of EVs along with PV installation in such a manner that shaves the peak load in an office building. The simulation used hourly load data representative for a small office building located in Cracow (Poland). For the same location hourly irradiation data was obtained. A deterministic model was created and implemented in MS Excel software. The study showed that 30 kW installed capacity in photovoltaics can reduce the observed peak load by 36% (from 19.8 kW to 14.52 kW) in a building consuming on an annual basis 54.7 MWh of electricity. Additionally, an appropriate management of the charging process of electric vehicles can increase the energy from photovoltaics self-consumption and level the observed energy demand in normal office building operating hours.
The degree of flammability for an artificial grass surface system
Authors: Kukfisz Bozena
Published: July 2018

The paper presents a general overview of sport and floor lining products, such as artificial grass, which are used in residential premises and public utility buildings, as well as the hazards which ensue from the use of synthetic grass [1]. An outline was made of the requirements for the fire safety of civil engineering structures arising from their designation and usage type. The results were presented from studies conducted on four samples of synthetic grass with the main ingredients being polyethylene and polypropylene. An appraisal method was determined for flammable properties and flame spread on a horizontal sample subjected to a heat radiation flux gradient in a research chamber pursuant to PN EN ISO 9239- 1 [25] applicable for all types of floors. Based on the estimated value of critical heat radiation flux (KSP) below 3 kW/m2 and in addition to the flammability of products directly subjected to a flame according to PN EN ISO 11925-2 [27], a study was made of the suitability of selected samples of artificial grass by their categorisation to class Efl - i.e. easily flammable products. The classification of artificial grass selected for the needs of the studies, which has been verified in practice, and designated for use as decoration for gazebos, balconies, terraces and public utility facilities is only admissible in residential premises of type ZL IV.
Comparative analysis of damage to sewer rehabilitation coatings
Authors: Kuliczkowski Andrzej , Nogaj Stanisław
Published: July 2018

Technologies for the trenchless rehabilitation of pipelines using various types of coatings have been used for almost half a century. Considering that the assumed life expectancy of such renewed pipelines is 50 years, it will be necessary to assess their technical condition in the near future. The aim of this article is to attempt to answer the question "Do existing damage classification methods allow for the full and reliable assessment of the sewers already renewed with rehabilitation coatings?". The scope of the article, and its original part, is to describe how the problem of damage assessment of rehabilitation coatings has been included in various methods of classification of underground infrastructure pipelines, and conducting a comparison that compares these methods in terms of the damages described. An interpretation of the results of the research on rehabilitation coatings operated in various time periods, starting from those recently applied to those operating for over 30 years, was also made. The result of the analysis is to present the differences and deficiencies in the damage classification methods discussed.
An analysis of the dynamics of changes to water levels in the open piezometers of the Pieczyska dam in the study period between January 2016 and April 2017
Authors: Lach Stanisław
Published: July 2018

The construction This paper aims to analyze the changes in trends of water levels in open piezometers installed at the dam in Pieczyska, which is the only seepage dam in Poland constructed via the silting technique. The scope of the research includes the analysis of piezometric data for each of the 82 active piezometers installed on the dam from January 2016 to April 2017 and taking into consideration the accident which occurred in February 2016, during which at the downstream of the dam there was hydraulic piping, following which ca. 150 m3of soil was eroded. A Statistical Rosner’s test for identifying and rejecting outliers was performed before carrying out the analysis of the piezometric data. A hypothesis was formulated that change in the trend occurred after the accident in February 2016. Using the method of least squares, for each open piezometer, two trend lines were matched to its water levels - the first one for the period January 2016-February 2016 and the second one for the period March 2016-April 2017. In this way, two slope coefficients for the linear function were obtained, together with the estimation of their errors. These slopes were compared using a statistical parallelism test.
The application of selected statistical tests in the detection and removal of outliers in water engineering data based on the example of piezometric measurements at the Dobczyce dam over the period 2012-2016
Authors: Lach Stanisław
Published: July 2018

Due to their size, water construction belongs to the largest and heaviest engineering structures. Ensuring the safe operation of such facilities requires continuous monitoring. Among the basic forms of monitoring in such facilities one should list continuous seasonal piezometric measurements, which are obligatory elements of general control measurements aimed at ensuring safety when using the facility. The latter is directly related to guaranteeing the safety of people living and working in an area exposed to destruction in the event of a possible disaster involving the building. From the perspective of increasing the safety of the hydrotechnical facility, optimal conditions occur when the water levels in piezometers oscillate around a constant value as this signalizes that filtration processes in the body and the surface of a dam are stable. Various factors may disturb measurements of water levels in open piezometers or water pressure in closed piezometers. These factors may take the form of systematic, random or obvious errors. Thus, before analyzing this type of data, the largest errors (outliers) should be removed from the sample as they could significantly affect the outcomes of analysis and lead to a false interpretation. In such a situation, it is necessary to apply respective statistical tests, which allow verification of whether a particular portion of data may be treated as a set of outliers at a given significance level α. In this work the following statistical tests were used to identify and remove outliers: Q-Dixon test, Grubbs test, Hampel test, Rosner test, Iglewicz and Hoaglin test, Tietjen-Moore test and quartile test. The scope of the empirical analysis is focused on piezometric measurements at the Dobczyce dam over the period 2012-2016.
The development of the eutrophication process in Dobczyce reservoir
Authors: Neverova-Dziopak Elena , Kowalewski Zbigniew
Published: July 2018

Eutrophication is currently a global threat to all types of aquatic ecosystems leading to a disturbance of their ecological balance and a deterioration of water quality. This problem is especially true for dam reservoirs, which play a key role in the economy of each country, being an important source of water supply. It is also a primary problem for all types of surface waters in Poland. Effective eutrophication abatement strategies should be based on reliable information about the actual trophic status of waters which in turn should be obtained with fast, accurate and low-cost monitoring. The aim of this paper is to investigate the possibility of the application of aggregated numerical indicators as an effective tool for the assessment of water trophic status and prove it using the example of the trophic state assessment of the Dobczyce dam reservoir. For this purpose, three numerical indicators elaborated by different authors were used.
Towards a sustainable approach to wastewater treatment strategy for eutrophication abatement
Authors: Neverova-Dziopak Elena
Published: July 2018

Eutrophication is one of the consequences of the negative anthropogenic impact on aquatic ecosystems. It leads to the degradation of both sweet and marine ecosystems, constituting a kind of secondary pollution of waters, which disturbs all types of their use. Undertakings related to preventing the negative effects of eutrophication are mainly conducted towards reducing the loads of nutrients introduced into surface waters and controlling the entire conditions in aquatic ecosystems in order to limit the development of aquatic vegetation. The increasingly restrictive legal requirement regarding the content of nitrogen and phosphorus in wastewater discharged into recipients enforces the application of expensive treatment technologies, and the public is becoming more aware of the rising costs of water and wastewater fees. In addition, wastewater treatment is a factor which has a negative impact on air quality due to greenhouse gas emissions and generates other environmental problems. The challenge for facilities, however, is determining which treatment alternatives will best meet their needs, both technically and financially, and to choose the most sustainable path. The problem of establishing a reasonable level of nutrient removal from wastewater, justified from an ecological and economic point of view is discussed in the paper.
The influence of selected factors on the load capacity of sewers that are renovated using the relining method
Authors: Nienartowicz Beata
Published: July 2018

The paper contains the results of a lengthy analysis of the operation of sewers renovated using the relining method. The author based the analysis on the effects obtained from computer simulations that were carried out using the Finite Element Method. The models used to proceed with the FEM simulations were verified by the results obtained from 1:1 laboratory research, conducted by the author over the period 2011-2013. The influence of a few strictly defined factors, related to the cooperation between the liner, injection grout and the construction of the original pipe, were taken into consideration. The report contains the description of FEM simulations and their assumptions, as well as a synthetic analysis of the results.
The river as an element of urban composition
Authors: Rybka Adam , Mazur Rafał
Published: July 2018

Cities often owe their existence to rivers; however, when cities begin to develop, the river turns into a barrier whose crossing becomes one of the more important engineering issues in municipal infrastructure. As a part of nature, a river significantly influences the form of a city. Its development can, in turn, also impact the shape of the river. It becomes an element of urban composition. This mutual dependency is a key problem in spatial planning. Finding the right balance between the natural character of the river, and the introduction of city structures into its course, leads to the creation of a balanced space, naturally utilized by city dwellers. The article analyses examples, which illustrate the relationship between a river and the city, with a particular look at Warsaw, where this relationship has undergone a huge transformation since the beginning of the 21st century.
Choice of road building technology - statistic analyses with the use of the Hellwig method
Authors: Skrzypczak Izabela , Radwański Wojciech , Pytlowany Tomasz
Published: July 2018

There are two technologies for road construction, e.g. an asphalt one and a concrete one, that exist in the market of road infrastructure at the moment and they both have their advantages and disadvantages [prof Jan Deja of Krakow Mining Academy, Cathedral of Building Materials Technology].The advantage of concrete pavement consists of the fact that it doesn’t require bigger financial expenditures within 10 – 20 years of exploitation (provided that necessary pavement maintenance treatments are carried out). In the case of asphalt pavement it is necessary to mill the wear off layer of the road already after 6-7 years. It leads to the question: which of these technologies should be chosen, which is better? The work hereby carries on analyses concerning a comparison of the technologies for road constructions; the asphalt one and the concrete one. Based on the analyses carried out with the use of the Hellwig method it was found that the achieved values of synthetic meters for asphalt and concrete pavements are close to each other, which may indicate that both technologies are comparable within the sectors taken for analyses in relation to accepted technological-technical and usability features.
Durability vs technical - the usage properties of road pavements
Authors: Skrzypczak Izabela , Radwański Wojciech , Pytlowany Tomasz
Published: July 2018

Contemporary trends in development and new material and technical solutions for road pavement should consider the permanent increase in the growth of traffic as well as aspects of environmental protection and balanced development. Nowadays, attempts are made towards estimation of the appropriate thickness for pavement construction already in the phase of its design. Flexible pavements are preferred over rigid concrete roads because of their certain advantages, such as they can be strengthened and improved in stages with the growth of traffic. Flexible pavements are less expensive in regards to their initial cost and maintenance. Concrete pavements are nowadays becoming more popular. The largest advantage for using rigid pavement is its durability and ability to hold its shape against traffic and difficult environmental conditions. Although concrete pavement is less expensive, it requires less maintenance and has a good design life. The main objective of this study is to present a comparative review on the suitability of pavement depending on various parameters such as material, loading, longer life, cost effectiveness etc.
Bankside trees and shrubs - specifics of the proposal for the vegetation arrangement
Authors: Šlezingr Miloslav
Published: July 2018

Bankside trees and shrubs are an important element in landscape enhancement. Within stream regulation, we should try to propose necessary interventions to the river profile and its closest surroundings with maximum respect for existing vegetation. Having carried out technical adjustments, it is necessary to propose, in liaison with competent specialists, and to provide for the implementation of new planting, or reconstruction of riparian and accompanying stands. The planting of, and the consequential care for, bankside trees and shrubs should not be underestimated as unplanted areas within natural succession become overgrown with self-seeding species whose unsuitable location and species structure may impair the stability of slopes, flow ratios in the riverbed and, even in aesthetical terms, they do not have to necessarily make a good impression.
C and N urban soil budget and its spatial differentiation in comparison with natural areas in the Wroclaw region of Poland
Authors: Sówka Izabela , Bezyk Yaroslav , Dorodnikov Maxim
Published: July 2018

An assessment of C and N balance in urban soil compared to the natural environment was carried out to evaluate the influence of biological processes along with human-induced forcing. Soil C and N stocks were quantified on the samples (n=18) collected at 5 - 10 cm depth from dominated green areas and arable lands in the city of Wroclaw (Poland) and the relatively natural grassland located ca. 36 km south-west. Higher soil carbon and nitrogen levels (C/N ratio = 11.8) and greater microbial biomass C and N values (MBC = 95.3, MBN = 14.4 mg N kg-1) were measured in natural grassland compared with the citywide lawn sites (C/N ratio = 15.17, MBC = 84.3 mg C kg-1, MBN = 11.9 mg N kg-1), respectively. In contrast to the natural areas, the higher C and N concentration was measured in urban grass dominated soils (C = 2.7 % and N = 0.18 % of dry mass), which can be explained mainly due to the high soil bulk density and water holding capacity (13.8 % clay content). The limited availability of soil C and N content was seen under the arable soil (C = 1.23 %, N = 0.13 %) than in the studied grasslands. In fact, the significantly increased C/N ratios in urban grasslands are largely associated with land conversion and demonstrate that urban soils have the potential to be an important reservoir of C.
A critical evaluation of the methods for the determination of required volumes for detention tank
Authors: Starzec Mariusz
Published: July 2018

Simplified methods allow a straightforward and quick determination of parameters of interest. A simplified method of calculation to be used must provide sufficiently accurate simulation results. This paper presents the results of tests completed to evaluate the effects of the parameters which describe a sewer catchment area and network on the value of Tp, a parameter applied in the Dziopak method [18]. The results of 2997 hydrodynamic simulations allowed to formulate an artificial neural network the application of which enabled the determination of the value of Tp dependent on the design parameters of a sewer catchment area and network. The artificial neural network had a very low error R2 = 0.9972 between the expected and determined values of Tp. The completed tests indicated a relationship by which an increase of the rainfall duration, a parameter used in the dimensioning of detention tank, is concomitant to an increase in the value of Tp. The calculations made so far included an assumption that the Tp value is constant irrespective of the design rainfall duration for the dimensioning of detention tank; this assumption has led to gross calculation errors. The paper also provides proof that the inclusion of these relationships allows a more precise determination of the service volume required for a multi-chamber detention tank.
The consequences of applying a new Polish Water Law Act for protection against urban flooding
Authors: Suligowski Ziemowit , Nawrot Nicole
Published: July 2018

Previous legal regulations did not create conditions for a comprehensive solution to the problems of the urban melioration complex. For over 20 years, urban flooding caused by atmospheric precipitation has been systematically recurring in Poland. The article was elaborated on the experience resulting from the 2001 and 2016 floods in Gdansk (Poland). The newly adopted Water Law Act creates a foundation for a systemic solution to previously neglected issues. A new supervisory authority has been introduced as ‘Polish Water’ (in the Polish nomenclature: Państwowe Gospodarstwo Wodne “Wody Polskie”). The Act takes into account the problems of flood risk management and counteracting the effects of drought.
Bearing capacity improvement of soft soil subgrade layer with Bio Stabilized Bacillus Subtilis
Authors: Hasriana  , Samang Lawalenna , Harianto Tri , Djide M.Natsir
Published: July 2018

The problem that is often faced in a road construction is a soil subgrade (soft soil). If the subgrade has a low bearing capacity, causing the soil to decrease greatly, so the road construction will quickly be damaged. Method to overcome the problem is bio stabilization with bacteria utilization. The purpose of this research is to know the bearing capacity improvement of soft soil as subgrade layer with bacteria solution of bacillus subtilis. Tests include soil physical and mechanical properties, compaction parameters and CBR tests. This test is based on ASTM for each test. Variations in addition of bacterial solution were 2%, 4%, 6%, 8% and 10% of dry soil weight with 7 days curing time. The results showed that the maximum value of CBR of soft soil was found at 39% on 6% bacterial solution. Increased CBR value from 2.8% to 39% or 13 times than untreated soil. This shows the use of bacterial concentration solution on soft soil significantly increases the bearing capacity.
The compressive strength improvement on softsoil subgrade with Quicklime stabilization, activated Gum Rosin and Iron Oxide
Authors: Sofwan  , Samang Lawalenna , Harianto Tri , Bakri Muhidin Achmad
Published: July 2018

This study is intended to increase the compressive strength and durability of subgrade with lime, on high plasticity expansive soil. The composition of the stabilizing agent used; composition-1 is soil + 5% slakelime, composition-2 is soil + 5% quicklime, and composition-3 is soil + 5% (quicklime with rosin and iron oxide activation). The testing includes swelling test, durability test, and CBR test. That the performance of stabilization with the composition-3 was able to reduce the swelling potential on 3th day by 93.89%, decrease the volume increase potential by 93.09% and decrease the weight increase potential by 94.00% in the 3 periods of wet-dry cycle, and increase the CBR value by 758.62%. That the activation of gum rosin and iron oxide on quicklime can significantly improve the performance of lime for stabilization of expansive clay as subgrade of highway.
Pedestrian crossing model in urban street (Case study on commercial area in Bandung)
Authors: Sulaksono Wibowo Sony , Wicaksana Rian
Published: July 2018

Pedestrians who cross without any crossing facilities and under mixed-traffic tend to have varying responses. The responses can be analyzed by using multiple linear regression model, with pedestrian crossing delay and pedestrian crossing speed set as response variables. This research aims to develop two pedestrian crossing models based on the condition at the midblock part of urban street, in particular commercial area and without specific crossing facilities. The two models are pedestrian crossing delay model and pedestrian crossing speed model. The affecting factors are considered in linear relationship and the multiple-linear regression models are used. The principal factor in the pedestrian crossing delay model is group size of more than 3 persons, while in the model of pedestrian crossing speed, the principal factors are number of group size and pedestrian baggage. The mean of pedestrian crossing delay was about 3 seconds while pedestrian crossing speed was about 1 m/s.
Trip attraction model of central market in Poso City based on multiple linier regression model
Authors: Indriyani Abulebu Henny , Tanari Bleiser , Isran Ramli Muhammad
Published: July 2018

Analysis of trip attraction in shopping centers is one of the most important aspects of travel demand management (TDM) in developing countries. This research aims to describe significant factors that influence people in obtaining their choice of frequency. Variables used in this research are family’s socio-demographic variables, properties of trip to shopping centers, nature of selecting trip time, and ways to travel. This research adopts multinomial logit model by modeling or building causal relationship between significant variables that influence trip frequency. The findings show that on holiday, no variable has significant influence towards the trip attraction of visitor movement at the Poso Central Market, while on workday, shopping cost (Χ16) has become the most influential variable. Based on the regression equation, the trip attraction of visitor movement model at the Poso Central Market on holiday is Y Χ003D; 2.076 Χ002B;0.997 Χ6Χ002B;0.276 Χ13 Χ002B; 0.605 Χ15 Χ002B; 0.643 Χ16, where R2 Χ003D; 0.004 below 5% or tend to close to 0, so it can be concluded that the ability of independent variables in eΧplaining variation of variables is very limited. Meanwhile, the regression equation on the trip attraction of visitor movement model at the Poso Central Market on workday is Y Χ003D; 3.090 Χ002B; 0.250 Χ2 Χ002B;0.158 Χ6 Χ002B; 0.628 Χ15 Χ002B;0.050 Χ16 Χ002B;0.662 Χ17, where R2 Χ003D; 0.030 below 5% or tend to approach to close to 0, so it can be concluded that the ability of independent variables in in eΧplaining variation of variables is also very limited.
Estimation urban railway demand in Yogyakarta using Bivariate Ordered Probit Model
Authors: Yuliar Rezika Wida , Priyanto Sapto , Zudhy Irawan Muhammad
Published: July 2018

The urban railway system is believed to solve transportation problems caused by the high growth of private vehicles and urbanization. This study is going to analyze the potential demand for the urban railway in Yogyakarta, Indonesia based on bivariate ordered probit model. The survey of preference stated with 120 samples conducted in Yogyakarta. The model of train demand is distinguished between public transport users and private vehicle users using seven scenarios. In-train travel time, waiting time, tariff, and ticketing discount for students are four factors considered in the model. The demand model shows that in-train travel time is the most important factor influence for train demand. Meanwhile, the scenario result reveals that respondents except student are willing to pay more to obtain shorter travel time, students who use private vehicle are reluctant to shift into the train, and ticketing discount brings no effect to stimulate them to use the train.
Psycho-social attributes and quality of life: Overview and pilot study of commuters’ travel behaviour
Authors: Tai Taufik , Ngah Rohana , Zaly Shah Muhammad
Published: July 2018

As metropolitan cities have improved and upgraded their public transport infrastructure to encourage higher public transport ridership, the next challenges understand factors that influence the individuals’ travel behaviour. Psycho-Social Attributes and Quality of Life are important elements to study the public transport ridership in metropolitan cities. This paper offers a short overview of the role of psycho-social and quality of life in understanding the travel behaviour of public transport in cities. The paper explores attributes such as social norms, personal norms, freedom, safety and comfort that have an impact on travel behaviour. Twenty-nine participants took part in the pilot study. Partial Least Square was used to analyze data. Results showed psycho-social attributes has strong direct relationship to travel behaviour while quality of life can be a good support for travel behaviour. Recommendation and suggestion are discussed.
Analysis of mode transportation performance and satisfaction level of Jenggala Commuter Line (Sidoarjo-Mojokerto)
Authors: Widyastuti Hera , Yayat Nurhidayat Asep , Soimun Ahmad , Setyarini Cahyani , El Hafizh Nafilah , Leliana Arinda
Published: July 2018

The increasing traffic density in Sidoarjo-Mojokerto is caused by the inadequancy of road capacity available to handle the growth of vehicle every years, and as a result, traffic jams arise in the highway, travel time will be extended, and require more cost. Therefore to handle this situation a mode of transportation which can carry a mass of passengger in the same time or a mass rapid transit, is necessary. Every customer demand the best service they can get from the transport provider and as a result that make an important indicator to measure the quality of performance or service. Analysis results reveal that travel in 45 minutes, boarding-alighting ranges from 1-3 minutes, Load factor 0.88. Based on the results of the analysis of the customer satisfaction level of conformity obtained on Jenggala commuter line IPA analysis with an average of 93.5% which shows that the customer are satisfied with the service and with a CSI value of 0.827.
Prediction model of cyclist’s accident probability in the City of Malang
Authors: Widyawati Agustin Imma , Zainul Arifin Muhammad
Published: July 2018

The development of transport is currently very rapid. This is because the increasing needs of the community, is directly proportional to the needs of public transport modes need to be able to support their activities. Malang is the second largest city in East Java province that has transportation problems such as traffic jams and high accident rate. The main purpose of the research is to create prediction model of cyclists’ accident probability in the City of Malang. The research used frequency analysis and logistic regression analysis. The results showed that The prediction model of cyclists’ accidents involving bicycle users in the City of Malang was formulated with P =1 / 1+e−(−1.047+1.103x3+1.617x6−1.965x15+2.029x16+1.057x24) with X3 = income, X6 = ownership of bicycle, X15 = behavior of check the brakes, X16 = behavior of check the tires, and X24 = cycling in groups.
Weaving length and lane-changing behavior at two-sided weaving section along federal road FT050: jalan kluang – ayer hitam
Authors: Prasetijo Joewono , Baba Ishak , Nurul Elena A. Arifin , Alvin John L. M. Siang
Published: July 2018

Weaving is defined as a movement of vehicles that crossing over the direct traffic from on-ramp to off-ramp. Apparently, weaving maneuver lead to collision risk and weaving turbulence especially at twosided weaving section. The following study recognize the maximum weaving length and lane-changing rate on Federal Route 50 (FT050) segment. Visual recording technique was used at two different locations that are called as Site A (KM15) and Site B (KM16). Data of traffic volume was extracted by playback the video/personal computer. Analysis was made using spreadsheet and applied the methodology of the Highway Capacity Manual 2010. The study found that Site A has more tendencies to encounter longer weaving turbulence with maximum weaving length ranging from 1952 m to 2120 m, compared to site B that is 1866 m to 1882 m. Site A with a longer distance of weaving section 358 m has higher intense of total lane-changing rate that is 1142 lc/h compared to Site B with a distance of weaving section 316 m has total lane-changing rate of 812 lc/h. Shorter weaving distance may cause less lane-changing activity because drivers does not prefer to perform weaving at shorter weaving section as it is forced the drivers to perform weaving drastically in more crammed situation and risk to dealing with accident is huge. The findings shall help to understand more on causes of weaving turbulence at weaving section by referring HCM 2010 methodology.
Study of efficiency pedestrian bridge crossing in the road of Pangerang Antasari, Banjarmasin
Authors: Nukta Ramadani Hari , Rahmani Hudan , Gazali Akhmad
Published: July 2018

You Pedestrians are one of the highest traffic accident objects. Several ways are used to reduce the number of accidents, among others by providing road crossing facilities, such as zebra cross and pedestrian bridge crossing. Unfortunately, the utilization of such facilities, especially pedestrian bridge crossing is still very less. This condition raises the need to identify efficiency use the pedestrian bridge crossing. The study location is a pedestrian bridge crossing in the road of Pangeran Antasari, Banjarmasin City. The studies method used are survey method and analysis method. The analysis shows that pedestrian percentage that doesn’t use pedestrian bridge crossing is very big, that is 87% at busy time and 88% at not busy time. The solution to increase the use of pedestrian bridge crossing is by install a curb railing fence on both sides of the road (about 200 m).
Traffic congestion analysis using travel time ratio and degree of saturation on road sections in Palembang, Bandung, Yogyakarta, and Surakarta
Authors: Hartanto Susilo Budi , Imanuel Ivan
Published: July 2018

Traffic performance have been measured based on degree of saturation, velocity, travel time, and delays. However, they weren’t enough to measure the traffic fluctuation that happen on normal days. This study aims to develop some modified analysis about traffic congestion based on the degree of saturation (DS) and travel time ratio (TTR). The travel time ratio is defined as a ratio between the travel time at peak hour and the travel time at off-peak hour in a certain road section. Traffic congestion conditions are classified into 4 categories: Peak-hour Congestion, Lengthy Congestion, Momentary Congestion, and Smooth Traffic. Based on survey results on road sections in Palembang, Bandung, Yogyakarta, and Surakarta, it can be concluded that peak-hour congestion occurs when TTR > 1,40 and DS > 0,75, lengthy congestion occurs when TTR < 1,40 and DS > 0,75, momentary congestion occurs when TTR > 1,40 and DS < 0,75, and smooth traffic when TTR < 1,40 and DS < 0,75.
Simulation of queue length on Amplas Entrance Toll before and after the ramp off development with Vissim software
Authors: Surbakti Medis , Satria Tadeus
Published: July 2018

In 2016 Medan City administration built on off ramp at Amplas fly over, where this ramp off directly to toll booth Amplas. The faster the time needs to get to the toll booth enables the rate of arrival vehicles that impact with increasing queue length. The purpose of this study is to know the length of the queue at Amplas toll booth before and after ramp off construction with queue theory method and vissim softwaremodelings. Data acquired by recording the activities at the research site in the form of vehicles volume. The queue length obtained from the queue method with average service time 7 seconds is 6,212 meter while the result using VISSIM software is 11,988 meter. From the VISSIM software models also obtained that the length of queue after the construction of the ramp off increases compared before the construction of ramp off, from 6,67 meter to 11,988 metre.
Potential cargo demand of Kuala Tanjung Port as international hub port in Western Indonesia
Authors: Sinaga Rosita , Priatna Humang Windra , Kurniawan Abdy
Published: July 2018

The Port of Kuala Tanjung will provide a logistical diversification opportunity in which the need for freight services for both export, import, and inter-island distribution through port will continue to increase. Seeing the magnitude of this potential, it is hoped that Kuala Tanjung Port can become an alternative International Hub Port in Western Indonesia that can provide added value for economic growth significantly. As a potential port to become an international Hub Port, Kuala Tanjung must have a large cargo demand, coming from its own hinterland as well as shifting from other nearby ports. The largest potential hinterland of Kuala Tanjung Port is in the form of oil palm and rubber plantations with derivative goods. Kuala Tanjung Port is predicted to accommodate 65% of total goods production in North Sumatra, both containerized and bulk liquid.
A demand and capacity analysis on bus semirapid transit network (Case: Jabodetabek public transport network)
Authors: Alvinsyah  , Hadian Edi
Published: July 2018

The objective of this research is to estimate the potential demand and capacity for Jabodetabek Bus Semi rapid Transit (BST). A transport model based on four step modeling is utilized to analyze the demand at network level. The model is developed from previous works and adjusted through a calibration and validation procedure with data from the field. The base year O-D matrix is calibrated by trip length frequency distribution through a matrix balancing process. While the passenger flow is validated through transit assignment procedure with data on the existing bus routes. Based on the assumptions made and different operational characteristics and fare system scenarios, a simulation through the developed model on the proposed BST is conducted. From the analysis, the total boarding, the passenger flow on peak hour for each BST corridor are obtained. Based on the average and maximum passenger flow, the required capacity for each corridor is determined.
Measurement modelling of the perceived service quality of intercity bus terminal
Authors: Abdullah Ashari , Yudono Ananto , Adji Adisasmita Sakti , Akil Arifuddin
Published: July 2018

There is a tendency on decreasing effectiveness on the use of intercity bus as result of relocation, this is indicated from passengers' reluctance for transit in the terminal. This research aims to develop monitoring and service evaluation indicators in intercity bus terminal. This research is to test quality of service factors out of 19 indicators. This research is conducted in Makassar Metro Terminal. The data is collected through survey to 350 passengers. Results of Exploratory factor analysis (EFA) classify the indicators into 5 factors, namely: Terminal Performance, Connectivity, Ease of Transfer, Operator Performance, Reliability service. Confirmatory Factor Analysis (CFA) is used to confirm the formed factors. Results of the CFA show that the Connectivity and Ease of Transfer have quite high factor loading each of which is by 0,93 and 0,9 compared to 3 other factors so that two factors are the priority in improving terminal service performance.
School bus operational performance in Malang City
Authors: Hariyani Septiana , Meru Utomo Dadang
Published: July 2018

Based on the preliminary observation not all students are interested in using the school bus, despite the school bus's service since 2014 in Malang city. So, this study evaluates school bus operation performance. This study used on board survey to calculate the load factor and travel time of school bus. While static survey is used to collect waiting time for passenger. The results showed that load factor departure and load factor arrival over 70%. Average school bus's travel time departure for six routes was 44-58 minutes, and average travel time arrival for 37-65 minutes for six routes. The last is waiting time for passenger 5-14 minutes.
Performance of pre-stressed concrete sheet pile after long-term exposure in the marine splash environments
Authors: Irmawaty Rita , Yamamoto Daisuke , Hamada Hidenori , Sagawa Yasutaka
Published: July 2018

Pre-stressed concrete (PC) sheet piles are commonly used for river revetment, retaining wall, etc. However, it has not been used in port and harbor structure due to corrosive environmental conditions, which is severe for steel corrosion in concrete structure. Performances of PC sheet piles were evaluated after 12 years exposure in the marine splash environment. An evaluation of mechanical properties, carbonation depth, porosity, chloride content and PC steel condition were carried out. Overall, all specimens showed satisfactory performance: only a few concrete corner and edge chips, low chloride content and low rate of corrosion were observed. Investigation results indicated that BS5 (B = GGBFS, S = steam curing, and cover thickness of 5 cm) showed the best performance (more durable), even though its strength was lower than the other.
Simple macro aggregate transport demand modelling in river transport study
Authors: Kusdian R.Didin
Published: July 2018

Sustainability and development of river transport can reduce the burden of road transport, where the development of road transport requires clearing new land is increasingly expensive and development is quite expensive. To estimate the amount of potential movement of people and goods through river mode choice model can be derived based on a comparison of risk at each mode, whereby the greater the risk will be even smaller portion of the mode selected. From the results of the model calculation of the aggregate distribution modes, obtained through a portion of the potential movement of the Batang Hari river in Jambi, Sumatra Island, Indonesia is 13, 89% for the movement of people and 14.85% for goods.
Selected problems of motor vehicle maintenance after side impact collision
Authors: Zalewski Jarosław
Published: July 2018

Over the years certain amount of works have been devoted to the selected aspects of motor vehicle collision modeling. Also, in some previous works by the author of this paper the selected problems related to collision modelling have been included. Those papers concerned mostly relations of the obtained crash simulation results to analytical results based on the Routh method, including restitution of the velocities normal and tangential to the plane of crash common for both vehicles involved in the accident. The aim of this paper is to present the selected problems related to the side impact motor vehicle collision modeling, which can be considered as a cause for certain diagnostic problems related to further maintenance of such vehicle after repair.