Performance evaluation and comparison study of adaptive MANET service location and discovery protocols for highly dynamic environments

A critical requirement in Mobile Ad Hoc Networks (MANETs) is its ability to automatically discover existing services as well as their locations. Several solutions have been proposed in various communication domains which could be classified into two categories: (1) directory based, and (2) directory-less. The former is efficient but suffers from the amount of control messages being exchanged to maintain all directories in an agile environment. However, the latter approach attempts to reduce the amount of control messages to update directories, by simply sending broadcast messages to discover services; which is also a non-desirable approach in MANETs. This research work builds on top of our prior work (Nazeeruddin et al. in IFIP/IEEE international conference on management of multimedia networks and services, Springer, Berlin, 2006)) where we introduced a new efficient protocol for service discovery in MANETs (MSLD); a lightweight, robust, scalable, and flexible protocol which supports node heterogeneity and dynamically adapts to network changes while not flooding the network with extra protocol messages—a major challenge in today’s network environments, such as Internet of Things (IoT). Extensive simulations study was conducted on MSLD to: (1) initially evaluate its performance in terms of latency, service availability, and overhead messages, then (2) compare its performance to Dir-Based, Dir-less, and PDP protocols under various network conditions. For most performance metrics, simulation results show that MSLD outperforms Dir-Based, Dir-less, and PDP by either matching or achieving high service availability, low service discovery latency, and considerably less communication overhead.

A BERT-Based Multi-Criteria Recommender System for Hotel Promotion Management

Numerous reviews are posted every day on travel information sharing platforms and sites. Hotels want to develop a customer recommender system to quickly and effectively identify potential target customers. TripAdvisor, the travel website that provided the data used in this study, allows customers to rate the hotel based on six criteria: Value, Service, Location, Room, Cleanliness, and Sleep Quality. Existing studies classify reviews into positive, negative, and neutral by extracting sentiment terms through simple sentimental analysis. However, this method has limitations in that it does not consider various aspects of hotels well. Therefore, this study performs fine-tuning the BERT (Bidirectional Encoder Representations from Transformers) model using review data with rating labels on the TripAdvisor site. This study suggests a multi-criteria recommender system to recommend a suitable target customers for the hotel. As the rating values of six criteria of TripAdvisor are insufficient, the proposed recommender system uses fine-tuned BERT to predict six criteria ratings. Based on this predicted ratings, a multi-criteria recommender system recommends personalized Top-N customers for each hotel. The performance of the multi-criteria recommender system suggested in this study is better than that of the benchmark system, a single-criteria recommender system using overall ratings.

PENDAMPINGAN PADA INDUSTRI MAKANAN

Pengabdian kepada masyarakat merupakan kegiatan yang menjadi salah satu pilar tegaknya Tri Dharma Perguruan Tinggi. Dengan melaksanakan kegiatan ini, institusi pendidikan tinggi secara langsung mendharmakan dirinya memberikan solusi-solusi untuk masyarakat. Pengabdian kepada masyarakat dilaksanakan dengan program Pendampingan dengan kasus yang disesuaikan dengan kondisi lapangan masing-masing IKM. Lokasi pengabdian adalah sekelompok industri makanan yang berada di seputaran Desa Kecamatan Godean Kabupaten Sleman. Atas saran dan arahan kelompok, sebagai sasaran khusus dipilih Kelompok PKK dengan beragam kondisi dan kemampuan produksi dengan harapan Kelompok tersebut dapat menjadi agent of change bagi kelompok yang lain. Hasil dari kegiatan pendampingan masyarakat adalah, Kesadaran yang rendah terhadap pentingnya keselamatan kerja, Belum adanya perencanaan produksi yang tersistematis, Proses produksi yang masih menggunakan alat tradisional, Tempat kerja yang tidak higienis dan tidak ergonomis, Luas lantai produksi yang tidak optimal, Utilisasi peraalatan yang rendah, Produktivitas rendah Kata kunci: IKM, industri makanan, Produktifitas. Community service is an activity that is one of the pillars of upholding the Tri Dharma of Higher Education. By carrying out this activity, the higher education institution directly dedicates itself to providing solutions for the community. Community service is carried out with the Assistance program with cases adapted to the field conditions of each IKM. The service location is a group of food industries located around the village of Godean District, Sleman Regency. Based on the group's suggestions and directions, PKK groups with various conditions and production capabilities were selected as special targets in the hope that these groups could become agents of change for other groups. The results of community assistance activities are, low awareness of the importance of work safety, absence of systematic production planning, production processes that still use traditional tools, unhygienic and un ergonomic workplaces, non-optimal production floor area, low equipment utilization. , Low productivity Key words: IKM, food industry, productivity.

BIMBINGAN KEAGAMAAN TENTANG ASWAJA AN-NAHDLIYAH PADA KELOMPOK KEGIATAN DZIKIR FIDA’ PUTRI DI MASJID AL- AMIN DESA SOKO, BANDUNG, TULUNGAGUNG

Religious issues brought up by a number of Islamic groups in Indonesia often lead to bad understanding in the community because they contain provocations and attempts to corner these Islamic groups. This service aims to respond to and counteract the deviant ideological understanding that is why this activity is important to be encouraged in the midst of society. The method of service is coordination, communication, implementation of activities and evaluation. The location of the service is in Soko Village, Bandung, Tulungagung Regency. The target of the service is the Dhikr Fida' Putri Activity Group at the Al-Amin Mosque, Soko Village, Bandung, Tulungagung. The results of the service activities include: a) Service activities have a positive impact on residents at the service location, namely reviving a religious atmosphere, instilling an attitude of togetherness, uniting the local community.

Sosialisasi Gerakan Masyarakat Hidup Sehat di Desa Bulutellue Kabupaten Sinjai Provinsi Sulawesi Selatan

The purpose of this community service activity is to provide an understanding to the community about the need to implement the Healthy Living Community Movement (Germas) by keeping the environment clean and consuming good and healthy food and drinks. The method used is the method of socialization, education, and community performance through community service activities. The results of the dedication show that this activity received the attention and support of the government and the community of Bulutellue Village. Based on observations at the community service location, the community has adopted a healthy lifestyle as an implementation of Germas.

The Influence of Sustainable Initiatives on Hotel Guest Experience

This study investigates the relationship between sustainable initiatives in hotels and their guest experiences by using big data from online guest reviews. Hotel review data of 1 018 938 hotel guest reviews from 23 international destinations were used. Word recognition software was utilised to filter reviews containing comments about sustainable initiatives resulting in a usable database of 903 reviews. Sentiment analysis was then performed to enable the transformation of the variables into 5-point Likert type scales. Using chi-squared tests and Cramer’s V for statistical and practical significance respectively, sustainable initiatives were found to have a statistical significant relationship with each of the eight hotel experience dimensions as well as overall hotel experience. The eight hotel experience dimensions are value, service, location, rooms, food, ambience, facilities and cleanliness. The hypothesis was accepted as there was a statistically significant relationship between sustainable initiatives and the hotel experience dimensions. The results from the comments, provide hotel management and academics with new insight into the relationship between sustainable initiatives in hotels and the hotel guest experience. Sustainable initiatives should be considered as another important dimension of the hotel experience, and big data analysis is effective to analyse guest reviews.

The changing demographics of the orthotist/prosthetist workforce in Australia: 2007, 2012 and 2019

Background Previous Australian workforce analyses revealed a small orthotist/prosthetist workforce with a low number of practitioners per 100,000 Australians. In recent years, initiatives were implemented to increase relative workforce size, including a government-led change in immigration policy to facilitate entry of experienced internationally trained orthotist/prosthetists into the Australian workforce. Given these changes, this project aimed to compare demographics of the orthotist/prosthetist workforce in Australia and each state/territory between 2007, 2012 and 2019. Methods This quasi-experiment analysed data from the Australian Orthotic Prosthetic Association (AOPA) database of certified orthotist/prosthetists, to compare changes in the absolute number of practitioners and the number of practitioners per 100,000 population, as well as practitioner age, gender and service location (i.e., metropolitan, regional/remote) across three time points, with a breakdown by each Australian state and territory. Results Between 2007 and 2019, the number of orthotist/prosthetists per 100,000 population increased 90%. Average age reduced significantly between 2007 (41.5 years) and 2019 (35 years) (p = 0.001). While the proportion of female practitioners increased significantly between 2007 (30%) and 2019 (49%), and between 2012 (38%) and 2019 (49%) (p < 0.05); only 22% of the female workforce is over 40 years of age. The proportion of practitioners servicing a regional/remote location did not change over time (range 13–14%). Conclusions Between 2007 and 2019, the national orthotist/prosthetist workforce increased at a rate that exceeded Australia’s population growth, became younger, and more female. However, the number of practitioners per 100,000 population remains below international recommendations; particularly in states outside of Victoria and Tasmania, and in regional/remote areas. In addition, low numbers of mid-late career female practitioners suggest challenges to retention of this particular cohort. These data can help inform workforce initiatives to retain a younger and more female workforce, and improve access to orthotic/prosthetic services.