scholarly journals DETERMINAÇÃO DA CAPACIDADE E NÍVEL DE SERVIÇO EM INTERSEÇÕES RODOVIÁRIAS ATRAVÉS DE SIMULAÇÃO

TRANSPORTES ◽  
1997 ◽  
Vol 5 (2) ◽  
Author(s):  
Sergio Henrique Demarchi ◽  
José Reynaldo Setti
Keyword(s):  
Weight Ratio ◽  
Level Of Service ◽  
Heavy Vehicle ◽  
Analysis Method ◽  
Average Delay ◽  
Unsignalized Intersections ◽  
De Se ◽  
Intersection Analysis ◽  
The Impact

<p>Este trabalho descreve o uso de um simulador na analise do impacto de veículos pesados na capacidade e no nível de serviço de interseções rodoviárias não semaforizadas. O impacto na capacidade é medido através da determinação de fatores de equivalência veicular, enquanto que a avaliação do nível de serviço da interseção baseia-se nos tempos médios de espera dos veículos durante as manobras de cruzamento. Os resultados obtidos mostram que os veículos que causam maior impacto na operação das interseções são os caminhões articulados, devido ao seu comprimento, e os caminhões médios, devido a sua menor relação potência/peso. Os fatores de equivalência obtidos são, em geral, maiores que equivalentes veiculares adotados pelo HCM de 1994, mostrando a necessidade de se desenvolver um método para analise de interseções não semaforizadas mais adequado as condições nacionais.</p><p>ABSTRACT</p><p>This paper describes the use of a simulator to analyze heavy vehicle impacts on capacity and level of service of rural unsignalized intersections. The impact on capacity is measured d by the do termination of equivalence factors and the level of service a assessment is based on average delay crossing times. The results indicate that the two vehicle classes responsible for the greatest intact are articulated trucks (due to their length) and medium-sized trucks, because of their poor power-to-weight ratio. The equivalence factors obtained are greater than those shown in the 1994 HCM, demonstrating the need for development of an unsignalized intersection analysis method more adequate to the Brazilian operational and vehicle conditions.</p>

Delays of Shared-Short Lanes at Unsignalized Intersections

2019 ◽  
Vol 2673 (8) ◽  
pp. 450-462
Author(s):  
Ning Wu ◽  
Werner Brilon
Keyword(s):  
Estimation Procedure ◽  
Level Of Service ◽  
Queuing Systems ◽  
Highway Capacity ◽  
Combined System ◽  
Total Delay ◽  
Average Delay ◽  
Unsignalized Intersections ◽  
Special Case ◽  
Total Average

At unsignalized intersections, both on the major street and on the minor street, there may be short turning lanes alongside the through lanes following downstream from one single lane. This combined system is termed a shared-short lane (SSL). Up to now it has only been possible to calculate the capacity of these lanes at the stop line and the capacity of the diverging point, where the turning lane diverges from the through lane. For the total average delay of the involved individual movements, there is no applicable estimation procedure. As a special case, the shared lane (SL), which is used by several movements without a separate turning lane, must also be reconsidered. This paper presents a new model for the estimation of average delays of SSL with SL as a special case at unsignalized intersections. The model is based on the analogy to standard queuing systems. The results depend on the length of the short lane. The model is validated by simulation. The results demonstrate that the outcome of the models in current highway capacity manuals may be misleading, with the risk of inaccurately classifying the level of service of an intersection. Therefore, there is an urgent need to complete the relevant procedures in highway capacity manuals by more realistic estimation procedures for the total delay at an SSL or an SL. The methods in this paper—even if they are rather complex—are recommended to be incorporated into future versions of highway capacity manuals using some simplifications.

Traffic Impact Assessment: A Case of Proposed Hypermarket in Skudai Town of Malaysia

2013 ◽  
Vol 65 (3) ◽  
Author(s):  
Anil Minhans ◽  
Nazir Huzairy Zaki ◽  
Rakesh Belwal
Keyword(s):  
Impact Assessment ◽  
Level Of Service ◽  
Commercial Development ◽  
Average Delay ◽  
Traffic Conditions ◽  
Rate Analysis ◽  
Traffic Impact ◽  
Highway Planning ◽  
Cross Classification ◽  
The Impact

This paper deals with traffic impact assessment (TIA) of a proposed commercial development in the neighbourhoods of Skudai Town in the Johor Bahru region. We used three regimes: Trip Rate Analysis, Cross-Classification Analysis, and Regression Analysis to assess the future traffic expected to be caused by a development – a proposed Tesco hypermarket (TH) in Skudai. The obtained mean trip rates were critically examined for forecasting traffic. The results indicated no significant variances from the estimated mean entry trip rates as mentioned in the Trip Generation Manual, Highway Planning Unit (HPU) of Malaysia. The estimated mean trip rates were used to measure the performance of a critical intersection in the immediate vicinity the development. The critical Intersection was analyzed using SIDRA software to estimate the delay – a criterion for determining the level-of-service (LOS) provided to motorists. Traffic projections made for horizon year 2025 depicted a LOS ‘F’ with 2716.9s of average delay. Traffic improvements were also proposed to mitigate the impact of future development and traffic conditions. The study provided a framework for the estimation of trip rates for Malaysian conditions along with some guidelines for their adoption. These insights to TIA can assist developers or local authorities in decision making.

ANALISIS PENGARUH PEMBANGUNAN JALAN LAYANG JANTI TERHADAP PERKEMBANGAN TATA RUANG KAWASAN JANTI STUDI KASUS : KAWASAN JANTI, DESA CATURTUNGGAL, KABUPATEN SLEMAN, D. I. YOGYAKARTA

2017 ◽  
Vol 11 (3) ◽  
pp. 255
Author(s):  
Jeky El Boru
Keyword(s):  
Road Network ◽  
Open Space ◽  
Qualitative Description ◽  
Analysis Method ◽  
Open Spaces ◽  
The Road ◽  
Before And After ◽  
Linkage Method ◽  
The Impact ◽  
Parking Place

Abstract: This research aims to analyze the impact of Janti Flyover Construction toward the growth of layout at Janti Urban Area, including structured space, open space, and linkage. Method used for data collecting are observation, air photograph monitoring, and interview, whereas the analysis method is qualitative description, which is the superimposed method of two layers, that are the layout condition before and after flyover construction. The result shows that the impact of Janti Flyover construction can be seen on building mass (solid), the increasing number of open spaces, including the road network, parking place, and park, whereas the relation between spaces, visually and structurally, can be seen on the growth of buildings which have new shapes and styles, therefore the performance of the overall building does not have a proportional shape. Considering Janti Street at the collective relation, its role is getting stronger as the main frame road network.Keywords: Flyover construction, layout changing, Janti AreaAbstrak: Penelitian ini bertujuan untuk menganalisis pengaruh pembangunan Jalan Layang Janti terhadap perkembangan tata ruang Kawasan Janti, meliputi ruang terbangun, ruang terbuka, serta hubungan antar ruang (“linkage”). Metode pengumpulan data dilakukan melalui observasi, pengamatan foto udara, dan wawancara; sedangkan metode analisis melalui deskripsi secara kualitatif yang berupa “superimposed method” dari dua lapisan kondisi lahan, yakni kondisi tata ruang sebelum dan sesudah pembangunan jalan layang. Hasil penelitian menunjukkan bahwa pengaruh pembangunan Jalan Layang Janti terdapat pada massa bangunan (“solid”), pertambahan ruang terbuka yang berupa jaringan jalan, parkir, dan taman; sedangkan pada hubungan antar ruang ̶ secara visual dan struktural ̶ yakni tumbuhnya bangunan dengan bentuk dan gaya baru, sehingga bentuk tampilan bangunan secara keseluruhan tidak proporsional. Pada hubungan kolektif, Jalan Janti semakin kuat perannya sebagai kerangka utama jaringan jalan.Kata kunci : Pembangunan jalan layang, tata ruang, Kawasan Janti

A REVIEW ON THE BENEFITS OF HORTICULTURAL THERAPY FOR RETIREMENT COMMUNITY IN MALAYSIA

2017 ◽  
Vol 2 (1) ◽  
pp. 1
Author(s):  
Amirul Amin Ismail ◽  
Ismail Samsuddin ◽  
Azman Zainonabidin ◽  
Harlina Mohd Ali
Keyword(s):  
Well Being ◽  
The Elderly ◽  
Retirement Community ◽  
Analysis Method ◽  
Horticultural Therapy ◽  
Seamless Integration ◽  
Ageing Society ◽  
After Effects ◽  
Malaysian Population ◽  
The Impact

By the year 2030, Malaysian population will experience the after effects of the rapid growth of ageing society. This paper investigates the impact of seamless integration of horticultural activity in the new residential typology of retirement community. It is believed that horticultural therapy is not only beneficial for physical and psychological but also promotes socialisation opportunities among the elderly. Comparative analysis method on selected precedent studies has been carried out and analysed in accordance with Malaysian context. Initial findings indicate that a retirement community with horticultural activity gives therapy for healthier well-being. This therapeutic activity can be apositive change in elderly lifestyle and essential towards the establishment of retirement community in Malaysia. 

scholarly journals Ultrahigh Ballistic Resistance of Twisted Bilayer Graphene

Crystals ◽  
2021 ◽  
Vol 11 (2) ◽  
pp. 206
Author(s):  
Qing Peng ◽  
Sheng Peng ◽  
Qiang Cao
Keyword(s):  
Weight Ratio ◽  
High Strength ◽  
Bilayer Graphene ◽  
Energy Propagation ◽  
Dynamic Simulations ◽  
Protective Material ◽  
Impact Performance ◽  
Ballistic Resistance ◽  
Twisted Bilayer Graphene ◽  
The Impact

Graphene is a good candidate for protective material owing to its extremely high stiffness and high strength-to-weight ratio. However, the impact performance of twisted bilayer graphene is still obscure. Herein we have investigated the ballistic resistance capacity of twisted bilayer graphene compared to that of AA-stacked bilayer graphene using molecular dynamic simulations. The energy propagation processes are identical, while the ballistic resistance capacity of the twisted bilayer graphene is almost two times larger than the AA-bilayer graphene. The enhanced capacity of the twisted bilayer graphene is assumed to be caused by the mismatch between the two sheets of graphene, which results in earlier fracture of the first graphene layer and reduces the possibility of penetration.

Cooling Efficiencies of a NiTi-Based Cooling Process

2013 ◽  
Author(s):  
Marvin Schmidt ◽  
Andreas Schütze ◽  
Stefan Seelecke
Keyword(s):  
Solid State ◽  
Thermodynamic Analysis ◽  
Cooling System ◽  
Analysis Method ◽  
Efficiency Ratio ◽  
Cooling Process ◽  
First Results ◽  
Work Input ◽  
Underlying Mechanisms ◽  
The Impact

Energy saving and environmental protection are topics of growing interest. In the light of these aspects alternative refrigeration principles become increasingly important. Shape memory alloys (SMA), especially NiTi alloys, generate a large amount of latent heat during solid state phase transformations, which can lead to a significant cooling effect in the material. These materials do not only provide the potential for an energy-efficient cooling process, they also minimize the impact on the environment by reducing the need for conventional ozone-depleting refrigerants. Our paper, presenting first results obtained in a project within the DFG Priority Program SPP 1599 “Ferroic Cooling”, focuses on the thermodynamic analysis of a NiTi-based cooling system. We first introduce a suitable cooling process and subsequently illustrate the underlying mechanisms of the process in comparison with the conventional compression refrigeration system. We further introduce a graphical solution to calculate the energy efficiency ratio of the system. This thermodynamic analysis method shows the necessary work input and the heat absorption of the SMA in stress/strain- or temperature/entropy-diagrams, respectively. The results of the calculations underline the high potential of this solid-state cooling methodology.

scholarly journals Physicochemical and Antifungal Properties of Clotrimazole in Combination with High-Molecular Weight Chitosan as a Multifunctional Excipient

Marine Drugs ◽  
2020 ◽  
Vol 18 (12) ◽  
pp. 591
Author(s):  
Bożena Grimling ◽  
Bożena Karolewicz ◽  
Urszula Nawrot ◽  
Katarzyna Włodarczyk ◽  
Agata Górniak
Keyword(s):  
Molecular Weight ◽  
High Molecular Weight ◽  
Weight Ratio ◽  
Scanning Calorimetry ◽  
Minimal Inhibitory Concentrations ◽  
Dissolution Tests ◽  
Effective Combination ◽  
The Impact ◽  
High Molecular Weight Chitosan

Chitosans represent a group of multifunctional drug excipients. Here, we aimed to estimate the impact of high-molecular weight chitosan on the physicochemical properties of clotrimazole–chitosan solid mixtures (CL–CH), prepared by grinding and kneading methods. We characterised these formulas by infrared spectroscopy, differential scanning calorimetry, and powder X-ray diffractometry, and performed in vitro clotrimazole dissolution tests. Additionally, we examined the antifungal activity of clotrimazole–chitosan mixtures against clinical Candida isolates under neutral and acid conditions. The synergistic effect of clotrimazole and chitosan S combinations was observed in tests carried out at pH 4 on Candida glabrata strains. The inhibition of C. glabrata growth reached at least 90%, regardless of the drug/excipient weight ratio, and even at half of the minimal inhibitory concentrations of clotrimazole. Our results demonstrate that clotrimazole and high-molecular weight chitosan could be an effective combination in a topical antifungal formulation, as chitosan acts synergistically with clotrimazole against non-albicans candida strains.

Abstract 13798: Ablation of the Hypertension Candidate Gene ATP2B1 Results in Increased Blood Pressure and Cardiac Hypertrophic Remodeling

Circulation ◽  
2014 ◽  
Vol 130 (suppl_2) ◽  
Author(s):  
Sally K Hammad ◽  
Min Zi ◽  
Sukhpal Prehar ◽  
Robert Little ◽  
Ludwig Neyses ◽  
...  
Keyword(s):  
Blood Pressure ◽  
Cardiac Hypertrophy ◽  
Diastolic Pressure ◽  
Association Studies ◽  
Weight Ratio ◽  
Blood Pressure Regulation ◽  
Heart Weight ◽  
Genome Wide Association Studies ◽  
Pressure Regulation ◽  
The Impact

Introduction: Hypertension is a major risk factor for cardiac hypertrophy and heart failure. Genome wide association studies have recently identified single nucleotide polymorphisms in ATP2B1 , the gene encoding the calcium extrusion pump, plasma membrane calcium ATPase (PMCA1), as having a strong association with hypertension risk. Hypothesis: PMCA1 plays an important role in regulation of blood pressure and protection against hypertension and cardiac hypertrophy. Aims: We aim to examine whether there is a functional link between PMCA1 and blood pressure regulation, and the development of hypertension. And to determine the impact this link may have on cardiac structure and function. Methods and Results: To study the role of PMCA1 we generated a global PMCA1 heterozygous knockout mouse (PMCA1 Ht ). PMCA1 Ht mice had 46% to 52% reduction in PMCA1 protein expression compared to the WT, in aorta, heart, kidney and brain. To study the mice under hypertensive stress conditions, 3 month old PMCA1 Ht and wild type (WT) mice were infused via minipump with angiotensin II (1mg/Kg/daily) or water as a control. Upon angiotensin treatment, PMCA1 Ht mice showed a significantly greater increase in systolic (62.24±3.05 mmHg) and diastolic pressure (52.68±4.67 mmHg), in comparison to the WT (33.37±2.91 mmHg and 23.94±4.56 mmHg, respectively), P<0.001, n=12. Moreover, PMCA1 Ht mice showed a significantly greater hypertrophic response as indicated by a greater heart weight to tibia length ratio, cardiomyocyte cell size (410±18.7 μm 2 ), compared to WT mice (340.4±9.8 μm 2 ), and increased expression of B-type natriuretic peptide (BNP), 2.36 ± 0.25 fold change, n =5-6, P< 0.01. Echocardiography showed no significant changes between PMCA1 Ht and WT mice, in heart rate, and in cardiac function, as indicated by fractional shortening and ejection fraction. In addition, PMCA1 Ht mice showed no sign of lung congestion as indicated by lung weight to body weight ratio. Conclusion: ATP2B1 deletion leads to increased blood pressure and cardiac hypertrophy. This provides functional evidence that PMCA1 is involved in blood pressure regulation and protects against the development of hypertension and cardiac hypertrophy.

Analysis of Uzbekistan's Planting Industry Growth Based on Shift-Share Method

2021 ◽  
Vol 7 (4) ◽  
pp. 7-13
Author(s):  
Zhang Lingzhi
Keyword(s):  
Agricultural Development ◽  
Industry Structure ◽  
Analysis Method ◽  
Industry Growth ◽  
Important Indicator ◽  
Industrial Policies ◽  
The Impact

Changes in the structure of the planting industry are an important indicator of the level of agricultural development. This paper applies the shift-share analysis method to analyse the growth of Uzbekistan’s planting industry from 2011 to 2018 into three parts: the national share, the industry mix and the regional shift component. The study found that the growth of Uzbekistan’s national planting industry has driven the growth of the planting industry in each state. Although the output of grain and cotton is still the main output of the planting industry, the scale of grain and cotton is relatively shrinking, and the output of vegetables, melons, fruits and berries, and grapes is on the rise. Because of the obvious differences in the impact of the planting industry structure and competitiveness on yield growth in Uzbekistan states, each state should formulate corresponding industrial policies according to the advantages and characteristics of planting industry.

Fighting disinformation. The impact of the Covid-19 on youth trust in European Institutions

2021 ◽  
pp. 71-89
Author(s):  
Lucia D’Ambrosi ◽  
Isabel Iniesta ◽  
Mariaeugenia Parito ◽  
Ricardo Pérez-Calle
Keyword(s):  
Multivariate Analysis ◽  
Young People ◽  
Quantitative Study ◽  
Sense Of Belonging ◽  
Analysis Method ◽  
Eu Integration ◽  
European Institutions ◽  
Communicative Actions ◽  
The Impact ◽  
The Eu

The pandemic crisis and the linked infodemic are extraordinary cases to test the EU capability to manage the disinformation disorder, especially towards young people. This paper aims to analyse the impact of the EU communicative actions regarding disinformation about Covid-19, on trust and sense of belonging in young Italian and Spanish university students. The research presents an exploratory and quantitative study that uses a second-generation multivariate analysis method. The results show that trust can be very well the resource on which EU communicative actions may positively impact. Nevertheless, our study reveals that the EU in-stitutions measures have not increased sense of belonging in EU integration.

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