IoT-Based Management of Smart Microgrid

The present power grid is going through a substantial and radical transformation process. Unification of existing electrical infrastructure with information and communication network is an unavoidable requirement of smart grid deployment and operation. The key characteristics of smart grid technology are full duplex communication, advanced metering infrastructure, integration of renewable and alternative energy resources, distribution automation and complete monitoring, as well as control of entire power grid. Smart grid communication infrastructure consists of varied and hierarchical communication networks. Application of smart grid can be realized in the various the facets of energy utilization. Internet of things also plays a pivotal role in smart grid infrastructure as it provides a ubiquitous communication network. This chapter describes an implementation of internet of things (IoT)-based wireless energy management system for smart microgrid communication infrastructure.

NETWORKING LAYER FOR THE EVOLUTION OF MARITIME PORTS INTO A SMART ENVIRONMENT

The maritime transport is playing an increasing and critical role on the worldwide trade; because it guarantee the delivery of 80% of the goods worldwide. The maritime ports are the articulation of the maritime transports, and therefore are responsible of (long delay in the ports means high risks for goods deterioration, higher costs for the logistics companies, longer occupation of containers for containers management companies, etc. In recent years some publications are talking about smart ports. In this paper we take some of the most recent models of smart port, and propose some extensions by considering the recent recommendations from International Maritime Organization (IMO), which have been translated and issued legislation frameworks by the European Union, such as maritime environment monitoring, air pollution, etc. In the recent years, any “smart” environment is modeled through an Internet-of-Things (IoT) layered model. Thus, we discuss the model of smart port environment as IoT layered model, where the networking/communications layer plays the core role. Furthermore, we analyse the possible networking technologies which could support the different smart domains building the smart port environment. This is achieved by first defining the different sub-layers of the hierarchical communication layer, and then comparing different technologies for building the broadband mobile sub-layer.

H-FL: A Hierarchical Communication-Efficient and Privacy-Protected Architecture for Federated Learning

The longstanding goals of federated learning (FL) require rigorous privacy guarantees and low communication overhead while holding a relatively high model accuracy. However, simultaneously achieving all the goals is extremely challenging. In this paper, we propose a novel framework called hierarchical federated learning (H-FL) to tackle this challenge. Considering the degradation of the model performance due to the statistic heterogeneity of the training data, we devise a runtime distribution reconstruction strategy, which reallocates the clients appropriately and utilizes mediators to rearrange the local training of the clients. In addition, we design a compression-correction mechanism incorporated into H-FL to reduce the communication overhead while not sacrificing the model performance. To further provide privacy guarantees, we introduce differential privacy while performing local training, which injects moderate amount of noise into only part of the complete model. Experimental results show that our H-FL framework achieves the state-of-art performance on different datasets for the real-world image recognition tasks.

Ambiências digitais como lugares de visibilidade/invisibilidade das organizações na gestão das crises / Digital environments as places of visibility/invisibility for organizations in crisis management

The digital environments (re) defines the relationships in/of organizational spaces. We realize that in these spaces as associations they move between visibility and invisibility strategy, considering opportunities and risks that involve them recursively. In this scenario, we discuss possible places/non-places for organizational communication in digital environments and reflect on the crisis management process in associations and the respective 'place' of communication. We start from the assumption that the associations are immersed in a scenario of uncertainty (Morin, 2008) and hypervisibility in which the ordinary daily life becomes, increasingly, transparent and absent of borders for the social environment. With this, the critical hypothesis, which are conventionally called ‘crisis’, become the new common (Bauman, 2016). And it is precisely in times of crisis that communication gains centrality, because “without effective, transparent, timely communication, it becomes much more difficult to control the crisis” (Forni, 2013: 289). We resort to complex thinking (Morin, 2008) and, in empirical terms, to the observation of two crisis that occurred in Brazil involving a mining company, Vale S.A. (Brumadinho and Mariana). To reflect on the (non) place of communication in crisis situations, in the light of the analysis of the cases mentioned, we are anchored in the anthropological conception of place and not place proposed by Augé (2010, 2012). The results indicate that there is a (de/re) territorialization in/of communication in these environments, over the course of events, potentiating non-places (Augé, 2017) and the absence of dialogues. There is a potential for hierarchical communication to give rise to dialogical dialogue (Sennett, 2012), which is not always understood, comfortable and experienced by organizations. Such scenarios, fluid and accelerated, demand openness to horizontal and more egalitarian communication to the detriment of hierarchical, vertical, centralized and centralizing communication. As Santaella (2010) points out, digital environments, such as social media, greatly increase the collective relationships that underlie organizations, propose agency and hybridization, fluid territorialities and 'temporary upheavals', displacement marches through differences, “to communicate other visions and ideas that exclusive ideologies and absolute truths, closed in on themselves like walled cities, do not contain” (Santaella, 2010: 280). On the other hand, that same fascination and seduction in the face of the possibilities arising from this mediatized reality, sometimes overshadow movements of invisibility, silencing and emptying of relationships and interactions. Vale S.A.'s cases also show the dilution of borders and communicational territories, in the midst of mediatized contexts, which cause the unfolding of crises to overflow the geographic locations where critical events take place. If the digital age has ubiquity as one of its features, in which borders between private and public life, between inside and outside, between here and there (Santaella, 2010), we believe that the effects of crisis also become 'ubiquitous', that is, they are everywhere and completely reconfigure the notions of impact and reach. In this context, attempts to make aspects of the crisis invisible become insufficient. The qualitative and exploratory dimensions (Gil, 2021) characterize the nature of the work. The theoretical review was developed from the dialogue between authors such as Augé (2017), Bauman (2016), Morin (2015), Forni (2013) and Wolton (2010), among others.

Hierarchical communication of chirality for aromatic oligoamide sequences

The communication of chirality at a molecular and supramolecular level is the fundamental feature capable of transmitting and amplifying chirality information. Yet, the limitation of one-step communication mode in many artificial systems has precluded the ability of further processing the chirality information. Here, we report the chirality communication of aromatic oligoamide sequences within the interpenetrated helicate architecture in a hierarchical manner, specifically, the communication is manipulated by three sequential steps: (i) coordination, (ii) concentration, and (iii) ion stimulus. Such approach enables the information to be implemented progressively and reversibly to different levels. Furthermore, the chiral information on the side chains can be accumulated and transferred to the helical backbones of the sequences, resulting in that one of ten possible diastereoisomers of the interpenetrated helicate is finally selected. The circular dichroism experiments with a mixture of chiral and achiral ligands demonstrate a cooperative behavior of these communications, leading to amplification of chiral information.

An intern-sufficient cloud for large-scale multi-robot systems and its application in multitarget navigation

Due to generally limited computing capability of an individual robot, cloud-based robotic systems are increasingly used. However, applications in large-scale multi-robot systems will be hindered by communication congestion and consequent lack of computing resources. In this study, an intern-sufficient cloud is investigated to alleviate the burden of communication and thus support more robots. At the same time, it enables heterogeneously idle computing resources of robots inside the system to be shared on demand, instead of relying on cloud servers and communication infrastructures, to make the scope of application wider. To this end, a hierarchical communication mechanism and a resource schedule algorithm are proposed. In the mechanism, the transmission power, signal-to-noise ratio, available bandwidth, and other relevant features are taken into account to estimate link quality for data transmission. Then, the constrained communication conditions and heterogeneous computing resources are balanced by the resource scheduling algorithm, so that the most appropriate computing resources of the robots are contributed to the mobile cloud. Furthermore, a multitarget navigation task is applied on the cloud to validate the work. Thereby, simulations and experiments are performed. The results show that the proposed intern-sufficient cloud can provide stable resources of communication and computation for a multi-robot system with 20 physical robots while achieving more effective multitarget navigation.

MODEL HIERARKI KOMUNIKASI ORGANISASI BADAN RESERSE DAN KRIMINAL KEPOLISIAN REPUBLIK INDONESIA (BARESKRIM POLRI)

<p>Abstrak</p><p>Tugas pokok yang dijalankan oleh organisasi Polri dibentuk secara nasional dengan konsep organisasi berjenjang mulai dari tingkatan yang bersifat fungsional antara lain fungsi Intelijen, Reserse, Sabhara, Lalu Lintas dan Pembinaan Masyarakat. Namun dalam implementasinya hierarki komunikasi organisasi yang dikembangkan belum berjalan optimal. Tujuan penelitian ini adalah untuk mengkaji tentang model hierarki komunikasi organisasi Badan Reserse dan Kriminal Kepolisian Republik Indonesia (Bareskrim Polri). Penelitian ini menggunakan jenis penelitian kualitatif yaitu peneliti mengeksplorasi suatu entitas atau fenomena (kasus) dan aktivitas (program, kejadian, proses, institusi, atau kelompok) terkait pembelajaran di Bareskrim Polri. Pengumpulan data dilakukan dengan metode wawancara dengan informan kunci yaitu. Metode ini ditujukan untuk mendapatkan <em>database</em> informasi yang ada pada setiap informan yaituPimpinan Polri/Kabareskrim Polri atau wakabareskrim, Direktur/Wakil Direktur Bareskrim Polri, Karo Wasidik, Kasub Dit, Kanit, Penyidik. Tehnik analisis data dilakukan dengan membaca dan memahami berbagai materi emperik (<em>emperical material</em>) yang telah dikumpulkan tersebut kemudian mengkaitkannya dengan <em>key themes</em> pada penelitian ini. Hasil penelitian ini membuktikan bahwa model hierarki komunikasi mengarahkan kepada siapa anggota organisasi berinteraksi dan berkomunikasi sehingga tidak dianggap salah (secara etika dan displin) baik dalam bersikap dan berperilaku khususnya dalam hubungan <em>person to person</em><em>. </em>Disisi lain, juga mempunyai hubungan dan saling terkait yaitu mempengaruhi pengelolaan organisasi yang muncul dalam bentuk keputusan, kebijakan dan arahan baik tertulis maupun lisan. Model hierarki komunikasi mendorong terjadinya manajemen pembelajaran yang tertib karena selain tetap membuka pola komunikasi dua arah, diskusi dan dialog serta di dalamnya ada kritik, masukan dan saran. Namun model<em> </em>komunikasi<em> </em>hierarki mensyaratkan komunikasi tersebut secara formal harus berpedoman pada etika, prosedur dan tata cara tertentu.</p><p> </p><p><em>Abstract</em></p><p><em>The purpose of this study is to examine the hierarchical model of organizational communication for the Indonesian National Police (Bareskrim Polri). This research uses a qualitative research type, namely, researchers explore an entity or phenomenon (cases) and activities (programs, events, processes, institutions, or groups) related to learning at the Police Criminal Investigation Unit. Data collection was carried out by the interview method. This method is intended to obtain a database of information on each informant. The analysis technique is done by reading and understanding various empirical materials that have been collected and then linking them to the key themes in this study. The results of this study prove that the hierarchical communication model directs to whom the members of the organization interact and communicate so that they are not considered wrong (ethically and disciplinarily) both in attitude and behavior, especially in person to person relationships. On the other hand, it also has a relationship and is interrelated, namely influencing organizational management that appears in the form of decisions, policies, and directions both written and oral. The hierarchical communication model encourages orderly learning management because apart from keeping open two-way communication patterns, discussions, and dialogues, and includes criticism, input, and suggestions. However, the hierarchical communication model requires that communication be formally guided by certain ethics, procedures, and procedures.</em></p>

Leader oversight bias in justice and hypocrisy evaluations of organisational diversity practices

Misalignment in diversity and inclusion (D&amp;I) occurs when organisations make claims that they do not uphold through their practices. In the present study, we probed a leader oversight bias which may lead to ignorance of misalignment and, consequently, lower perceptions of organisational hypocrisy. Through an online experiment, we randomly allocated 198 participants to the role of either a leader or non-leader in a fictional organisation. T-tests showed that leaders perceived their organisation as less hypocritical than non-leaders. This effect was sequentially mediated by anticipated justice following exposure to a gender diversity statement, and perceived justice following exposure to organisational practices. Contrary to our predictions, gender did not moderate this effect. Our results demonstrate that leaders may perceive their organisations as more just and less hypocritical even when this may not be the case, because they attempt to confirm their prior, more favourable justice anticipations. This research calls for establishing better cross-hierarchical communication structures in organisations and for more effective management of leadership oversights. Future studies can examine this bias in field settings and isolate its driving mechanisms.