Mobile Office Research Articles

Next Generation Mobile Core Resource Orchestration: Comprehensive Survey, Challenges and Perspectives

Re-architecting mobile network functions and central office is one of the hottest topics of software defined networking (SDN) and network function virtualization (NFV). It is known as Next generation mobile network (NGMN). The main benefit of re-architecting is to bring cloud advantages to mobile operator networks. On the other hand, while the openness is one of the most wanted characteristics of NGMN, many open source implementations have been introduced to accelerate realizing the NGMN such as resource allocation management and orchestration which is considered as one of the hardest problems in SDN, NFV, and network virtualization. To that end, this article has comprehensively reviewed the mobile core architecture, resource management and orchestration evolutions in order to investigate the relay of the mobile operators on open source components, especially in developing countries, in order to build their future NGMN infrastructure for 4G/5G (fourth/fifth generations) access networks. Furthermore, the article shows a large number of open source infrastructure’ components that the operator needs to integrate them together, which is a challenging task. Moreover, the article addresses the integration framework challenges for resource management and orchestration based on continuous integration continuous development (DevOps) model. The outcomes of this work encourage mobile operators to involve and contribute to open source integration efforts as well as build and test their NGMN integration scenarios.

A detailed introduction of different beamforming techniques used in 5G

SummaryThe arrival of high‐speed internet facility such as the mmWave system or more commonly known as 5G wireless network is a prime impetus that is expected to be the driver for radical transformation in current communication methods. Apart from the numerous applications, an area where 5G is expected to be a game‐changer is the vehicle‐to‐everything or V2X network. This technology uses a road side unit (RSU) which provides wireless connectivity to vehicles, pedestrians, and so on, which may be either stationary or mobile so that their exact location can be known in real time. Researchers have demonstrated experimentally that 4G connectivity with such RSUs can provide a reliable low latency network for certain applications. For instance, for near‐perfect localization of each connected objects on the map, there is a need to stream GPS data, process semantic information from videos continually using computer vision. While these are simply for locating vehicles in real time so that road accident can be prevented. They are also the host of other features such as entertainment, health monitors, and mobile office that can be integrated inside a moving vehicle. To address the issues massive multi‐input multi‐output (MIMO), communication can be realized by using hybrid transceivers which uses a setup consisting of high‐dimensional analog phase shifters and power amplifier with dimensional digital signal processing units having low power. It is therefore vital to choose an apt beamforming design that will run on low energy. A comparison of different varieties of beamforming methodologies for determining the most efficient massive MIMO network is carried out here.

Digitalization of employment relations: world experience and its implementation in Ukraine

European and local practices of digitization and their impact on employment relations, determination of current directions of digitalization development in Ukraine and implementation of the best world solutions are studied. It is pointed out that COVID-19 pandemic has radically changed the role and perception of digitalization in society and the economy. It is noted that digital technologies are now necessary for work, study, entertainment, communication, shopping and access to everything from health services to culture. The digital transformation has opened up new opportunities for the creation of new enterprises, the emergence of new forms of digital employment. It is noted that in early 2018 Ukraine officially embarked on the path of digitalization and policy making in the digital segment. The Concept of Digital Economy of Ukraine and Social Development for 2018–2020 has been adopted, which contains the main goals and principles of digital development in the country, as well as plans for their implementation. As a result of digitalization, modern technology makes it to perform job functions outside the workplace, not only at home (home office), but anywhere (mobile office) in many areas of the economy. Due to the possibility of remote earning, on June 25, 2019, the Ministry of Social Policy published the bill «On amendments to the Labor Code of Ukraine (concerning flexible forms of labor organization)». It is proposed, in Art. 24 of the Labor Code in particular, to clarify that the compliance with the written form is mandatory when signing an employment agreement for remote work. The indicators of the Digital Economy and Society Index (DESI), which demonstrates the level of digital efficiency of Europe and monitors the progress of the European Union in this direction are summarized. In order to implement the influence of digitalization on employment relations in Ukraine, the experience of a number of European countries (Spain, France, Germany and the Scandinavian countries) is studied and analyzed. It is concluded that the influence of modern digital technologies significantly changes the state of the labor market, the demand for certain specialists, and the conditions of remote employment. The wages and social security are transformed and become individualized. Employees' dependence on employers is decreasing, their work is shifting into the digital space, which requires constant acquiring of new knowledge and skills in working with modern technologies.

New Work Arrangements — A Review of Concepts and Theories

Much has changed since Frithjof Bergmann’s seminal thoughts on New Work (1994; 2004): For example, mobile devices as well as virtual communication and cooperation have entered the business world and have brought forth a new economy, agile work processes, new employment relationships, leadership styles, co-working tools, and an enhanced spatial and temporal flexibility (for a review, see Aroles et al., 2019). The present special issue on “New Work Arrangements” was initiated to revise and refine the underlying concepts and theories to account for these path-breaking developments. When we made our call for submissions in late 2019, our main observation was that research on work and leadership has been neglecting the pervasive presence of technology in organizational work (Orlikowski & Scott, 2017). We argued that these changes in work methods and organization are so profound that common theories and concepts need to be revisited to see if they still do justice to the changed situation. Shortly thereafter, the world was hit by the global COVID-19 pandemic. The corresponding restrictions on social contact and mobility catalysed, whether desired or not, the widespread use of virtual collaboration and communication tools, as well as flexible work arrangements that account for the various needs and duties of employees’ private lives (e.g., home-schooling). Much of what has been unthinkable in advance (e.g., video conferences instead of business trips, flexible forms of mobile work or home office) has proven beneficial for companies as well as employees. Hence, in the ‘new normal’ of the aftermath of the COVID-19 crisis in Western industrialized nations, it seems clear that many of the new approaches will be maintained. Revisiting forms of New Work, as well as related challenges and opportunities, is now more important than ever.

Freemium marketing: use of demand-side research in market segmentation strategy

ABSTRACT Freemium business models are widely used, including by major companies such as Spotify, Pandora, SurveyMonkey, Dropbox and by many start-ups. They are very common in industry segments such as mobile gaming, music, personal productivity, and office collaboration. This marketing management research study uses a case study of a freemium product offering from a major global computer firm to examine the demand side of freemium pricing. The consumer user base for this product is approximately 30 million persons worldwide. This study uses a large-scale (over 5,000) survey of these users to examine consumer response and segmentation. It illustrates how market segmentation can be used to select and optimize offerings to generate additional revenue streams. The authors show how a freemium offering may best be implemented for differential market segments.

Defining A Design Space of The Auto-Mobile Office: A Computational Abstraction Hierarchy Analysis

One advantage of highly automated vehicles is drivers can use commute time for non-driving tasks, such as work-related tasks. The potential for an auto-mobile office—a space where drivers work in automated vehicles—is a complex yet underexplored idea. This paper begins to define a design space of the auto- mobile office in SAE Level 3 automated vehicles by integrating the affinity diagram (AD) with a computational representation of the abstraction hierarchy (AH). The AD uses a bottom-up approach where researchers starting with individual findings aggregate and abstract those into higher-level concepts. The AH uses a top-down approach where researchers start with first principles to identify means-ends links between system goals and concrete forms of the system. Using the programming language R, the means-ends links of AH can be explored statistically. This computational approach to the AH provides a systematic means to define the design space of the auto-mobile office.

Kajian Komparatif Sebelum Dan Pasca Launching Samsat Keliling Dan Samsat Corner Mall Terhadap Penerimaan Pajak Kendaraan Bermotor Di Provinsi Sumatera Selatan

The South Sumatera Government wants to achieve the targets set in the Local Own-source Revenue (LOR), of which 40 percent comes from the motor vehicle tax and motor vehicle transfer fees. However, the LOR revenue target through vehicle tax and motor vehicle transfer fees set in 2016 only reached around 50 to 60 percent. In an effort to improve services that get closer to the community and increase the collection of vehicle tax in order to achieve the LOR targets in South Sumatera Province, the Provincial Government has launched a special mobile One-stop Administration Services Office (SAMSAT) in 21 Regional Technical Implementation Unit (UPTD) SAMSAT in 17 districts/cities and SAMSAT corner mall which is in 4 malls in Palembang city.The study aims to examine and analyze whether there are significant differences before and after the launching of mobile One-Stop Administration Service Office and SAMSAT corner mall on Vehicle Tax Revenue of South Sumatra Province

TZ-MRAS: A Remote Attestation Scheme for the Mobile Terminal Based on ARM TrustZone

With the widespread use of mobile embedded devices in the Internet of Things, mobile office, and edge computing, security issues are becoming more and more serious. Remote attestation, one of the mobile security solutions, is a process of verifying the identity and integrity status of the remote computing device, through which the challenger determines whether the platform is trusted by discovering an unknown fingerprint. The remote attestation on the mobile terminal faces many security challenges presently because there is a lack of trusted roots, devices are heterogeneous, and hardware resources are strictly limited. To ARM’s mobile platform, we propose a mobile remote attestation scheme based on ARM TrustZone (TZ-MRAS), which uses the highest security authority of TrustZone to implement trusted attestation service. Compared with the existing mobile remote attestation scheme, it has the advantages of wide application, easy deployment, and low cost. To defend against the time-of-check-to-time-of-use (TOC-TOU) attack, we propose a probe-based dynamic integrity measurement model, ProbeIMA, which can dynamically detect unknown fingerprints that generate during kernel and process execution. Finally, according to the characteristics of the improved dynamic measurement model, that is, the ProbeIMA will expand the scale of the measurement dataset, an optimized stored measurement log construction algorithm based on the locality principle (LPSML) is proposed, which has the advantages of shortening the length of the authentication path and improving the verification efficiency of the platform configuration. As a proof of concept, we implemented a prototype for each service and made experimental evaluations. The experimental results show the proposed scheme has higher security and efficiency than some existing schemes.

Analisa Rekayasa Ulang Proses Bisnis Pada UD. Top Stiker

Rekayasa ulang digunakan untuk mengindentifikasi, menganalisa, dan mendesain ulang proses bisnis inti perusahaan/organisasi bertujuan mencapai peningkatan dramatis pada pengukuran kinerja penting seperti biaya, kualitas, layanan dan kecepatan. Pencapaian dilakukan rekayasa ulang yaitu mendukung lebih sebuah misi perusahaan dan mengurangi biaya. UD. Top Stiker adalah salah satu perusahaan yang bergerak di bidang aksesoris telepon genggam, alat tulis dan kantor dansepeda motor yang saat ini sedang berkembang, sehingga perlu meningkatkan kualitas pelayanan semakin baik. Namun proses bisnis di UD. Top Stiker belum berjalan dengan baik dan memiliki permasalahan yang dapat mengganggu jalannya kegiatan operasional UD. Top Stiker. Menggunakan metode BPR dan analisis SWOT untuk menghasilkan strategi alternatif dan BPMN untuk pemodelan proses bisnis. Penelitian yang digunakan untuk mendapatkan data diperoleh melalui studi kepustakaan, observasi, wawancara dan memberikan kuesioner kepada pemilik UD. Top Stiker. Hasil akhir penelitian ini yang diperoleh adalah sebuah rekomendasi mendesain ulang proses bisnis dengan mengurangi beberapa tahapan proses dari 18 tahapan proses menjadi 13 tahapan proses sehingga menjadi lebih cepa dan sederhana.Sedangkan IFAS faktor kekuatan bernilai 1,55 dan faktor kelemahan bernilai 1,75, untuk EFAS faktor peluang bernilai 1,7 dan faktor ancaman bernilai 1,45.

A trauma medical home, evaluating collaborative care for the older injured patient: study protocol for a randomized controlled trial

BackgroundIt is estimated that 55 million adults will be 65 years and older in the USA by 2020. These older adults are at increased risk for injury and their recovery is multi-faceted. A collaborative care model may improve psychological and functional outcomes of the non-neurologically impaired older trauma patient and reduce health care costs.MethodsThis is a randomized controlled trial of 430 patients aged 50 and older who have suffered a non-neurologic injury and are admitted to a level one trauma center in Indianapolis, IN, or Madison, WI. Participants will be assigned to either the Trauma Medical Home (TMH) intervention or usual care. The TMH intervention is a collaborative care model that includes validated protocols addressing the multi-faceted needs of this population, with the help of care coordination software and a mobile office concept. The primary outcome is self-reported physical recovery at 6- and 12-month follow-up. Secondary outcomes include self-reported psychological recovery, acute health care utilization, and cost-effectiveness of the intervention at 6 and 12 months. The TMH collaborative care model will be delivered by a registered nurse care coordinator. The assessments will be completed by trained blinded research assistants.DiscussionThe proposed study will evaluate a collaborative care model to help maximize psychological and functional recovery for non-neurologically injured older patients at four level one trauma centers in the Midwest.Trial registrationClinical Trials. NCT03108820. Registered on 11 April 2017.Protocol Version 6: Study # 1612690852. April 12, 2019.Sponsor: Indiana University. Human subjects and IRB contact information: irb@iu.eduProspectively registered in the WHO ICTRP on 4 June 2017.

LoPoFly: Location and Positioning Optimization for Flying Networks

In areas that demand short-term Internet connectivity, like events and mobile offices, it is not feasible to have a permanent wireless Internet infrastructure. To provide broadband Internet access to temporary clients, we propose the use of flying networks. These networks need to be carefully managed, mainly due to the limitation on their nodes’ battery capacity. Considering these issues, we introduce a new Location and Positioning Optimization Technique for Flying Networks (LoPoFly). LoPoFly includes two modules: (i) location that uses the Deterministic Annealing (DA) metaheuristic to find a location where a flying node is required based on client distribution and (ii) positioning that manages relocation and exchange of flying nodes. To the best of our knowledge, this is the first approach that employs the DA metaheuristic to manage the flying networks covering restrictions related to energy, replacement, communication, and mobility together. Through simulations, we analyze the performance of LoPoFly in two different mobility scenarios. The results show that in both scenarios, LoPoFly mitigates the number of required flying nodes, even serving a higher number of clients.

Status and prospects of development of military dentistry in Ukraine.

Providing a high level of dental care to military personnel during military activities is one of the major tasks of military dentistry. The work objective is to increase the effectiveness of the system for providing dental care to military personnel of the Armed Forces of Ukraine taking into account the experience of military operation of the Joint Forces in the East of Ukraine in the terms and conditions of transition to Euro-Atlantic standards. It is established that in Ukraine significant changes have been introduced in the system of dental care delivery for military personnel. Dental care is provided to military personnel against extremely high dental disease incidence rate among the military personnel of the units. In the area of the operation of the Joint Forces, a new model of providing dental care to military personnel has been created and successfully operates, which is represented by a network of hospital and removable (mobile) offices. Possibilities of implementation of Euro-Atlantic dental care standards in Ukraine have been studied and the ways of their implementation in military dental institutions have been identified. Several significant differences were detected in the system of domestic dental care organization in the action area: human resourcing, extent of care and complete service facilities. A comprehensive program for prevention of dental diseases and the classification of dental health condition of military personnel which must ensure qualitative staffing of Ukrainian troops in action area has been developed. The scope of assistance has been substantiated and local clinical practice guidelines of dental care for military personnel in action area have been developed taking into account military experience gained in the area of JFO as well as NATO standards. Obtained results give the possibility to make conclusion that the principal mainstream for improvement of military dentistry in Ukraine is bringing of all aspects of its operation into conformity with relevant NATO standards, taking into account own experience gained during military activities in the East of Ukraine.

ЕВОЛЮЦІЯ ДИЗАЙНУ ІНТЕР’ЄРУ ОФІСНИХ ПРОСТОРІВ IT-ІНДУСТРІЇ

Identification of trends in the planning organization and interior design of office spaces of the IT-industry, as well as an analysis of their changes over the course of the industry’s development. A study of the office spaces design evolution based on historical-artificial, architectural-planning, functional analysis. The source of the research became scientific and journalistic articles, domestic and foreign design developments of office spaces. We conducted an analysis of studies on the organization of the working environment in the IT-industry companies. It has been established that the “information technologies” include not only modern computer tools for processing and exchanging information, but also more traditional ones – telephone, mail, press, etc. — which became the prerequisite for a broad historical review. As a result of the analysis of historical periods of the office interior design development, the main stages of their formation are determined: the end of the 19th century – traditional office; 1900-30s – open-plan tayloristic office; 1950s – office landscape, 1960s – structural office; 1960-80s – cubes; 2000s – casual office. The advantages and disadvantages of the main historical types of planning solutions for the organization of office space are identified. The concept of the design of modern "mobile offices" in the environment of open-plan office spaces is disclosed. A retrospective review of the working environment of IT-industry specialists has been made. The main trends of the historical stages of the interior design of the IT-industry offices from the end of the 19th century to the present are analyzed and generalized. Practical significance of the study is determined by the expansion and deepening of knowledge about the evolution of IT-industry office interior design and can be used in the practice of designing appropriate environments.

Railway Transportation Dispatching System Based on Mobile Internet Technology

With the continuous development of mobile communication and Internet technologies, the development and research of software applications based on mobile Internet have also entered the blowout development stage. At the same time, the shortcomings of traditional PC desktop applications, which lack portability, have been gradually enlarged. What has emerged are the rapid development of Web applications and mobile applications, and the emergence of new concepts such as mobile office. To this end, this article studies the design and implementation of a railway transportation dispatching system based on mobile Internet technology. On the basis of the existing office supervision method of the railway supervision company and the on-site supervision method of the supervision engineer, based on the MQTT protocol, it implements the active push of messages, develops basic supervision and to-do tasks modules. During the design and development of this system, the Web end will apply the current popular responsive web development technology to enhance the user’s interactive experience on a variety of different platforms. This system uses an object-oriented analysis method to design the architecture of the railway transportation dispatching system. After a detailed design analysis, a complete set of railway transportation dispatching solutions is proposed.

Cooperative content downloading in vehicular ad hoc networks

Abstract Content downloading in vehicular ad hoc networks supports the large file sharing, the entertainment experience and the mobile office. However, because of the high velocity, the frequent topology change, the limited bandwidth and a small number of roadside units, it is difficult to directly transmit the contents to their requesters through only one hop. This paper proposes a cooperative content downloading scheme in vehicular ad hoc networks, named CCD. It introduces the direction, range and timing constraints to select appropriate cooperative nodes, which improve the contact probability between the cooperative nodes and the request senders. Additionally, CCD computes the number of copies for each block according to its importance and urgency, and then schedules the block transmission accordingly. Experiments show that compared with existing schemes, CCD has a short delay and a small transmission overhead.

Is Your Android App Insecure? Patching Security Functions With Dynamic Policy Based on a Java Reflection Technique

With the popularization of smart devices, companies are adopting bring-your-own-device or mobile office policies that utilize personal smart devices for work. However, as work data are stored on individual smart devices, critical security threats are emerging, such as the leakage of confidential documents. Enterprises want to address this issue by adapting enterprise mobility management (EMM) solutions. Appwrapping is among the core technologies in EMM solutions, enabling security function insertion or misused code patching without the original application (app) source code. Studies on permission control, misused code patching, security function insertion based on static policies, etc., have been conducted, but there are limitations such as poor user convenience and overhead. In this paper, we propose an AppWrapper toolkit to support dynamic polices. Basically it can insert security function execution code into apps by using appwrapping technology without the original source code. This code uses Java reflection to invoke security functions dynamically based on preset policies. Accordingly, after the initial appwrapping, the policy can be changed easily. In addition, even when multiple security functions are required, Java reflection can invoke multiple security functions dynamically and simultaneously without conflicting with the existing code. The AppWrapper toolkit also provides a log function to check in real time where the security function is needed. Hence, the policy-setting administrator can check the log in real time and implement the security function where needed. Our experimental results show that this technique improves significantly the efficiency, effectiveness, and convenience of adding security function execution code.

On-Board and Train-to-Wayside Free Space Optical Link: Design and Characterization

Nowadays, online connectivity has become an important factor in the current competition between different means of transportation. Being one of the most comfortable and satisfactory means of transportation, a train acts as a mobile office for a wide range of customers. This demands for a high speed connection in order to provide personalized digital services. A reliable and highly secure link is needed for real time information required for signaling, control, safety and security. In this paper a free space optical (FSO) communication link is designed, implemented, and tested at different data rates reaching 5 Mb/s. A small scaled link between train waysides and carriages is implemented in order to set the geometrical boundaries for a practical scaled up link. A 1 m train track is built in laboratory to set the track length and angle of transceiver boundaries for continuous transmission. The received signal voltage is measured and bit error rate (BER) is calculated along the track. The experimental results are compared to the ray trace model simulation results. The experiment is conducted with different field of view (FOV) light emitting diodes (LEDs) in order to check their impact on short and long distance links. Obtained results showed full train track coverage of 90 cm is achieved using the 13°-LED, where the 3°-LED was limited to 85 cm. A modification to the geometrical dimensions is suggested in order to suit the real train track. According to the designed circuits, a bandwidth can reach up to 337 Mb/s. At a speed of 500 kb/s, 9 m of coverage and nearly 38 m are obtained for the 13°-LED and the 3°-LED, respectively. On the other hand, at the maximum bit rate of 337 Mb/s, the coverage is reduced to 1 m and 5 m for the 13° and the 3°- LEDs, respectively

黄山风景区智能水务移动办公平台的研究与开发

黄山风景区智能水务移动办公平台的研究与开发

모바일 오피스를 위한 보안성검토 분석 및 추가 요구사항 도출

스마트폰 사용자의 급격한 증가로 인해, 많은 기업이 PC 기반으로 임직원에게제공하던 업무 서비스를 모바일에서도 이용할 수 있도록 모바일 오피스를 도입 중에 있다. 단말기 분실 및 도난, 악성코드 감염 사례가 증가함에 따라, 개인정보 및기업 기밀정보 유출 등 모바일 오피스 관련 보안사고도 함께 증가하고 있어 기업에서 모바일 오피스 도입 시 보안점검의 중요성이 대두되고 있다. 하지만 모바일오피스 가동 시 실시하고 있는 보안점검 항목으로는 모바일 오피스의 보안 위협들을 도출하고 대응하는 데 한계가 있어 모바일 오피스에 특화된 보안점검 항목을도출할 필요가 있다. 따라서 본 논문에서는 먼저 모바일 점검 가이드, 국내외 기업에서 사용하는 보안진단 기준, 관련 연구논문을 비교 분석하였고 모바일 오피스의보안 위협과 보안 요구사항 연구를 통하여 모바일 오피스에 특화된 보안점검 15개항목을 추가로 도출하여, 9개 영역의 총 53개 항목을 제시하였다. 본 연구에서 제안하는 모바일 오피스 보안점검 항목을 통해 보안 관리자에게는 보안점검기준으로, 개발자에게는 안전한 모바일 오피스를 개발하는 가이드로 활용될 것이다.

RFID Based Traffic Offence Fining System

This paper proposes an RFID based traffic offence fining system that automatically detects the defaulter who breaks the traffic signal. It comprises of an RFID reader for detecting the vehicle which breaks the traffic signal, a microcontroller for processing and collecting the data of defaulter and a GSM module for sending the message on defaulters registered mobile number and regional transport office (RTO). This proposed system is very unique and eliminate the traditional use of paper pen fining system.