scholarly journals Pemodelan Optimasi Penjadwalan Angkutan Pemadu Moda Bandara dengan Pendekatan Program Lindo (Studi Kasus Bus Damri Bandara Soetta-Cengkareng)

WARTA ARDHIA ◽  
2017 ◽  
Vol 42 (2) ◽  
pp. 63
Author(s):  
Eny Yuliawati
Keyword(s):  
Service Quality ◽  
Public Transport ◽  
Load Factor ◽  
Operational Cost ◽  
Trade Off ◽  
Transport Operator ◽  
Bus Scheduling ◽  
Time Period ◽  
Significant Difference ◽  
Low Performance

Penjadwalan bus adalah salah satu proses rencana operasi diperusahaan angkutan umum yang berhubungan dengan kegiatan melayani penumpang secara cepat dan efisien dari tempat asal ke daerah tujuan. Analisis dalam proses perencanaan angkutan umum terdiri dari banyak tingkatan dan sangat kompleks. Pada tingkat operasional, pengumpulan data dan peramalan jumlah penumpang pada setiap titik transfer adalah hal yang sangat sulit dilakukan. Proses pengambilan keputusan terkait dengan penjadwalan bus adalah trade-off antara kualitas pelayanan dan biaya operasi. Hal ini disebabkan, disatu sisi jika menggunakan terlalu banyak bus akan meningkatkan biaya operasi dari perusahaan bus, disisi lain jika menggunakan armada bus terlalu sedikit akan menurunkan tingkat kualitas pelayanan. Saat ini Perum DAMRI melayani 21 rute yang menghubungkan bandara Soekarno-Hatta dengan beberapa wilayah di Jakarta, Banten dan Jawa Barat. Data jumlah penumpang menunjukkan tingginya perbedaan antara tiap periode waktu (peak dan off-peak) yang mana membutuhkan jumlah bus yang berbeda untuk melayani setiap periode tersebut. Akan tetapi, Perum DAMRI cenderung menggunakan jumlah bus yang sama disetiap rute sepanjang hari tanpa mempertimbangkan fluktuasi jumlah penumpang. Hal ini mengakibatkan, beberapa bus terlihat kosong (load factor rendah) sementara armada lain terisi penuh (load factor 100 persen). Kondisi tersebut menunjukkan kinerja yang rendah terkait dengan produktivitas atau penggunaan bus, jarak dan jumlah perjalanan serta konsumsi BBM. Tujuan penelitian ini adalah untuk memperbaiki system penjadwalan bus bandara (DAMRI) Soekarno Hatta berbasis demand flexibility dengan menggunakan metode program linier khususnya rute Gambir dan Bogor. Secara umum system penjadwalan hasil optimasi memberikan kontribusi signifikan dalam peningkatan pendapatan sebesar 5 persen. [The Scheduling Optimization Modeling of The Airport Interconnecting Transport Modes With Lindo Program Approach (Case Study Damri Bus of Soekarno-Hatta Airport Cengkareng)]Bus scheduling is a process of operational planning in public transport operator which is related to passenger service quality. A decision making of bus scheduling is a trade-off between service quality and operational cost. In one side if public transport operator employs too many buses, it will increase operational cost of company. In another side a low number of bus fleet causes the declining of service quality. Nowadays DAMRI serves 21 routes connecting Soekarno-Hatta airport with some destinations in Jakarta, Banten and West Java. Passenger data shows that there is a significant difference between time period (peak and off-peak) where it needs a different bus number to serve each period. Nevertheless DAMRI is still using the same number of bus in every route without considering daily passenger fluctuation. As a result, some buses look like empty (low load factor) at off-peak hour. This condition reveals a low performance related to bus productivity, travel distance, trip number and fuel consumption. In average, the daily load factor is approximately 65 percent. The purpose of this research is to improve airport bus scheduling system based on demand flexibility with linear programming method in Gambir and Bogor line. The improvement could be examined by minimizing total trip without sacrificing the service quality. This strategy will surely decrease the operational cost and increase company profit up to 5 percent.

scholarly journals Investigation of the Relationship between the Perceived Public Transport Service Quality and Satisfaction: A PLS-SEM Technique

2021 ◽  
Vol 13 (23) ◽  
pp. 13018
Author(s):  
Karzan Ismael ◽  
Szabolcs Duleba
Keyword(s):  
Service Quality ◽  
Least Squares ◽  
Partial Least Squares ◽  
Public Transport ◽  
Public Transportation ◽  
Structural Equation ◽  
Group Analysis ◽  
Equation Modeling ◽  
Private Vehicle ◽  
Significant Difference

Public transportation (PT) service quality is recognized as a cornerstone of infrastructure development in many countries. Understanding the satisfaction level of public transport users towards provided service quality is vital. However, there is still a lack of research to identify the specific relationship between the experience of service quality and private vehicle (PV) users’ satisfaction. Therefore, this paper aimed to examine the different satisfaction attributes of PV users due to the COVID-19 pandemic and to make possible suggestions to policymakers on how to adapt to these changed attitudes. The paper highlights that some satisfaction issues became more significant, while the importance of others was mitigated due to the unusual circumstances. In this study, variance-based Partial Least Squares Structural Equation Modeling (PLS-SEM) was applied to test the proposed hypotheses. Further, Partial Least Squares Multi-Group Analysis (PLS-MGA) was conducted for investigating the perception of age and gender groups on the basis of gap analysis. An online panel and printed questionnaire survey were used to collect data in Budapest, Hungary in October and November 2020 during COVID-19 from the perception of 100 PV users. The findings show that perceived service quality and accessibility are statistically significant in the formation of PV users’ satisfaction but safety and security were not significantly related to satisfaction. Additionally, results from PLS-MGA reveal that there was a significant difference among gender and age groups in achieving satisfaction associated with safety and security. The conclusions of this study are not only beneficial for the theory of this field but also contribute to practice for policymakers in terms of providing better service with specific identification of how to encourage more private vehicle users to use public transportation.

Negative Life Events Associated With Deliberate Self-Harm in an African Population in Uganda

Crisis ◽  
2005 ◽  
Vol 26 (1) ◽  
pp. 4-11 ◽  
Author(s):  
E. Kinyanda ◽  
H. Hjelmeland ◽  
S. Musisi
Keyword(s):  
Life Events ◽  
Negative Life Events ◽  
Life Time ◽  
Later Life ◽  
Dose Effect ◽  
Deliberate Self Harm ◽  
Time Period ◽  
Significant Difference ◽  
Self Harm ◽  
Suicide Interventions

Abstract. Negative life events associated with deliberate self-harm (DSH) were investigated in an African context in Uganda. Patients admitted at three general hospitals in Kampala, Uganda were interviewed using a Luganda version (predominant language in the study area) of the European Parasuicide Study Interview Schedule I. The results of the life events and histories module are reported in this paper. The categories of negative life events in childhood that were significantly associated with DSH included those related to parents, significant others, personal events, and the total negative life events load in childhood. For the later-life time period, the negative life events load in the partner category and the total negative life events in this time period were associated with DSH. In the last-year time period, the negative life events load related to personal events and the total number of negative life events in this time period were associated with DSH. A statistically significant difference between the cases and controls for the total number of negative life events reported over the entire lifetime of the respondents was also observed, which suggests a dose effect of negative life events on DSH. Gender differences were also observed among the cases. In conclusion, life events appear to be an important factor in DSH in this cultural environment. The implication of these results for treatment and the future development of suicide interventions in this country are discussed.

Service Quality Perception towards E-CRM Practices among Customers of Private and Public Sector Banks of Rajasthan Using SERVQUAL Method

2018 ◽  
Vol 7 (3) ◽  
pp. 22
Author(s):  
Neeti Kasliwal ◽  
Jagriti Singh
Keyword(s):  
Public Sector ◽  
Service Quality ◽  
Banking Sector ◽  
Sampling Technique ◽  
Vital Role ◽  
Public Sector Banks ◽  
Significant Difference ◽  
Private And Public ◽  
Score Method ◽  
Public Banks

Banking sector is growing rapidly and playing a vital role in the economic development of the nation. Both private and public sector banks are giving more priority to service quality to satisfy their customers. For this, banks are now emphasizing on E-CRM practices to carry out transactions and communicate with their customers. The purpose of this research is to assess the service quality among private and public banks in Rajasthan. Purposive sampling technique has been employed to collect the data from three private banks and three banks from public. To analyze the data, descriptive statistics, Mean score method and t test have been used. Results indicates that there is a significant difference in consumer’s perception of service quality dimensions related to E-CRM practices provided by selected private and public sector banks of Rajasthan..The findings of this research will help policy makers of banking sector to set customer oriented policies.

Effect of short-term use of oral contraceptive pills on intraocular pressure

2020 ◽  
Vol 35 (3) ◽  
Author(s):  
Tayyaba Gul Malik ◽  
Hina Nadeem ◽  
Eiman Ayesha ◽  
Rabail Alam
Keyword(s):  
Oral Contraceptive ◽  
Childbearing Age ◽  
Short Term ◽  
Oral Contraceptive Pills ◽  
Contraceptive Pills ◽  
Time Period ◽  
Significant Difference ◽  
Group A ◽  
Group B ◽  
Short Time

Objective: To study the effect of short-term use of oral contraceptive pills on intra-ocular pressures of women of childbearing age.   Methods: It was a comparative observational study, conducted at Arif memorial teaching hospital and Allied hospital Faisalabad for a period of six months. Hundred female subjects were divided into two groups of 50 each. Group A, included females, who had been taking oral contraceptive pills (OCP) for more than 6 months and less than 36 months. Group B, included 50 age-matched controls, who had never used OCP. Ophthalmic and systemic history was taken. Careful Slit lamp examination was performed and intraocular pressures (IOP) were measured using Goldman Applanation tonometer. Fundus examination was done to rule out any posterior segment disease. After collection of data, we analyzed and compared the intra ocular pressures between the two groups by using ANOVA in SPSS version 21.   Results: Average duration of using OCP was 14.9 months. There was no significant difference of Cup to Disc ratios between the two groups (p= 0.109). However, significant difference was noted between the IOP of OCP group and controls. (p=0.000). Conclusion: OCP significantly increase IOP even when used for short time period.

scholarly journals Impact of COVID-19 pandemic on hip fractures: the central London experience COVID-related urgent geriatric hip trauma (COUGH) study COVERT ( COVid Emergency-Related Trauma and orthopaedics) collaborative

2021 ◽  
Author(s):  
Chang Park ◽  
Kapil Sugand ◽  
Arash Aframian ◽  
Catrin Morgan ◽  
Nadia Pakroo ◽  
...  
Keyword(s):  
Best Practice ◽  
Neck Of Femur ◽  
Health Crisis ◽  
Femur Fractures ◽  
Time Period ◽  
Vulnerable Patients ◽  
Significant Difference ◽  
Usual Residence ◽  
Hip Trauma ◽  
The Impact

Abstract Introduction COVID-19 has been recognized as the unprecedented global health crisis in modern times. The purpose of this study was to assess the impact of COVID-19 on treatment of neck of femur fractures (NOFF) against the current guidelines and meeting best practice key performance indicators (KPIs) according to the National Hip Fracture Database (NHFD) in two large central London hospitals. Materials and methods A multi-center, longitudinal, retrospective, observational study of NOFF patients was performed for the first ‘golden’ month following the lockdown measures introduced in mid-March 2020. This was compared to the same time period in 2019. Results A total of 78 cases were observed. NOFFs accounted for 11% more of all acute referrals during the COVID era. There were fewer overall breaches in KPIs in time to theatre in 2020 and also for those awaiting an orthogeriatric review. Time to discharge from the trust during the pandemic was improved by 54% (p < 0.00001) but patients were 51% less likely to return to their usual residence (p = 0.007). The odds ratio was significantly higher for consultant surgeon-led operations and consultant orthogeriatric-led review in the post-COVID era. There was no significant difference in using aerosol-generating anaesthetic procedures or immortality rates between both years. Conclusion The impact of COVID-19 pandemic has not adversely affected the KPIs for the treatment of NOFF patients with significant improvement in numerous care domains. These findings may represent the efforts to ensure that these vulnerable patients are treated promptly to minimize their risks from the coronavirus.

scholarly journals Understanding Users’ Satisfaction Towards Public Transit System in India: A Case-Study of Mumbai

2021 ◽  
Vol 10 (3) ◽  
pp. 155
Author(s):  
Rahul Das
Keyword(s):  
Service Quality ◽  
Public Transport ◽  
Travel Demand ◽  
Resource Constraints ◽  
Public Transit ◽  
Sampling Bias ◽  
Relevant Information ◽  
Transit System ◽  
Transport Services ◽  
Developing Cities

In this work, we present a novel approach to understand the quality of public transit system in resource constrained regions using user-generated contents. With growing urban population, it is getting difficult to manage travel demand in an effective way. This problem is more prevalent in developing cities due to lack of budget and proper surveillance system. Due to resource constraints, developing cities have limited infrastructure to monitor transport services. To improve the quality and patronage of public transit system, authorities often use manual travel surveys. But manual surveys often suffer from quality issues. For example, respondents may not provide all the detailed travel information in a manual travel survey. The survey may have sampling bias. Due to close-ended design (specific questions in the questionnaire), lots of relevant information may not be captured in a manual survey process. To address these issues, we investigated if user-generated contents, for example, Twitter data, can be used to understand service quality in Greater Mumbai in India, which can complement existing manual survey process. To do this, we assumed that, if a tweet is relevant to public transport system and contains negative sentiment, then that tweet expresses user’s dissatisfaction towards the public transport service. Since most of the tweets do not have any explicit geolocation, we also presented a model that does not only extract users’ dissatisfaction towards public transit system but also retrieves the spatial context of dissatisfaction and the potential causes that affect the service quality. It is observed that a Random Forest-based model outperforms other machine learning models, while yielding 0.97 precision and 0.88 F1-score.

Students’ perception and satisfaction of services provided by public and private higher education institutes: a case study in Albania

2021 ◽  
Vol ahead-of-print (ahead-of-print) ◽  
Author(s):  
Drita Kruja ◽  
Huong Ha ◽  
Elvira Tabaku
Keyword(s):  
Higher Education ◽  
Service Quality ◽  
Eastern Europe ◽  
Student Satisfaction ◽  
Instructional Effectiveness ◽  
Private Higher Education ◽  
Public And Private ◽  
Content Type ◽  
Significant Difference ◽  
The Individual

Purpose There have been many research studies on students’ satisfaction of services in universities in developed countries. However, students’ expectation and satisfaction of public and private higher education institutions (HEIs) with regard to service quality in Eastern Europe have been under-researched. Therefore, this study aims to offer an empirical examination of student satisfaction of the service quality of public and private HEIs in Albania by evaluating the gap between students’ expectation and perception and the effect of student satisfaction on retention in HEIs. Design/methodology/approach The survey instrument used in this study was the student satisfaction inventory in the USA. Primary data were collected from a survey of students in two private and four public HEIs in Albania. A total of 554 valid responses were collected from the survey. Findings The findings suggested that there were performance gaps between public and private HEIs. Public universities performed well in terms of concern for the individual, campus support services, student-centeredness and instructional effectiveness. Private HEIs scored well in terms of concern for the individual, academic advising effectiveness, instructional effectiveness and safety and security (parking). There is a significant difference in students’ perception of the overall satisfaction of HEIs. Students’ overall satisfaction positively impacts their retention. Originality/value Overall, this study provides valuable insights to private and public HEIs’ administrators regarding to student satisfaction and retention. The findings will have far-reaching managerial implications for all groups of stakeholders in terms of the service delivery by universities in Albania and Eastern Europe.

The Influence of Perceived Colours Over the Reaction Accuracy of Youth Tennis Players

2020 ◽  
Vol 65 (4) ◽  
pp. 91-96
Author(s):  
Cosmin Miha Moca ◽  
Dan Mihai Gherţoiu
Keyword(s):  
Reaction Time ◽  
Motor Response ◽  
External Stimulus ◽  
White Background ◽  
Tennis Players ◽  
Voluntary Response ◽  
Time Period ◽  
Significant Difference

ABSTRACT. Introduction. Reaction is a purposeful voluntary response to an external stimulus. There is certain time period between application of external stimulus and appropriate motor response to the stimulus called the reaction time. Objectives. The aim of this paper was to determine if different colour contrasts affects the reaction time of young tennis players. Materials and Methods. The participants in this study were young tennis players (N = 10), 3 females and 7 males, with the ages between 12 to 13 years old. Results. There was a significant difference in the scores for white background (M=7.5, SD=1.51) and orange background (M=6, SD=0.81) conditions; t(9)=3.30, p = 0.009. Conclusion. Our study managed to show that a different kind of background colour can affect the reaction accuracy in identifying an object of different shape and colour than the background.

scholarly journals Retention Of Cardiac Auscultation Skill Requires Paired Visual And Audio Information In New Learners

2008 ◽  
Vol 2 (2) ◽  
Author(s):  
Glenn Nordehn ◽  
Spencer Strunic ◽  
Tom Soldner ◽  
Nicholas Karlisch ◽  
Ian Kramer ◽  
...  
Keyword(s):  
Visual Information ◽  
Heart Sound ◽  
Heart Sounds ◽  
Sound Recognition ◽  
Cardiac Auscultation ◽  
Time Period ◽  
Significant Difference ◽  
Post Test ◽  
Short Time ◽  
Audio Information

Introduction: Cardiac auscultation accuracy is poor: 20% to 40%. Audio-only of 500 heart sounds cycles over a short time period significantly improved auscultation scores. Hypothesis: adding visual information to an audio-only format, significantly (p<.05) improves short and long term accuracy. Methods: Pre-test: Twenty-two 1st and 2nd year medical student participants took an audio-only pre-test. Seven students comprising our audio-only training cohort heard audio-only, of 500 heart sound repetitions. 15 students comprising our paired visual with audio cohort heard and simultaneously watched video spectrograms of the heart sounds. Immediately after trainings, both cohorts took audio-only post-tests; the visual with audio cohort also took a visual with audio post-test, a test providing audio with simultaneous video spectrograms. All tests were repeated in six months. Results: All tests given immediately after trainings showed significant improvement with no significant difference between the cohorts. Six months later neither cohorts maintained significant improvement on audio-only post-tests. Six months later the visual with audio cohort maintained significant improvement (p<.05) on the visual with audio post-test. Conclusions: Audio retention of heart sound recognition is not maintained if: trained using audio-only; or, trained using visual with audio. Providing visual with audio in training and testing allows retention of auscultation accuracy. Devices providing visual information during auscultation could prove beneficial.

Sign in / Sign up

Export Citation Format

Share Document