Decoding Five Times Extended Reed Solomon Codes Using Syndromes

Recently a new family of five times extended Reed Solomon codes constructed over certain finite fields GF(2 zeta), where zeta >= 3 is an odd integer, was discovered. Until now only an erasure decoding algorithm for these codes was published. In this paper a new decoding algorithm is presented, which allows correcting up to two errors in a codeword from the five times extended Reed Solomon codes. The proposed decoding algorithm is based on syndrome usage

Adding RLL Properties to Four CCSDS LDPC Codes Without Increasing Their Redundancy

This paper presents the construction of Run Length Limited (RLL) Error Control Codes (ECCs) from four Low Density Parity Check (LDPC) Codes specified by Consultative Committee for Space Data Systems (CCSDS). The obtained RLL-ECCs present a practical alternative to the CCSDS codes with pseudo-randomizers. Their advantage is that the maximal runlengths of equal symbols in their codeword sequences are guaranteed, which is not the case if the common approach with pseudo-randomizers is used. The other advantages are that no additional redundancy is introduced into encoded codewords and that the encoding and decoding procedures of the original error control CCSDS codes do not have to be modified in the following cases. In the first case if hard decoding is used and the transmission channel can be modeled as a Binary Symmetric Channel (BSC) or in the second case if soft decoding and coherent Binary Phase Shift Keying (BPSK) modulation is used and the appropriate transmission channel model is an Additive White Gaussian Noise (AWGN) channel

Construction of Error Control Run Length Limited Codes Exploiting Some Parity Matrix Properties

Error control codes (ECC) as well as translation codes (TC) are used today in many different systems such as computer storages, communications systems and consumer electronic devices. ECC introduce redundancy into the encoded digital sequence in order to decrease the number of errors at output of its decoder [1]. TC introduce redundancy, in order to translate any digital sequence at the input of TC encoder to such output sequence, which fulfills constrains deduced from practical requirements. It is possible to construct codes, which have both of these properties, so called Transcontrol codes or their subclass error control run length limited (ECRLL) codes. In this manuscript a new approach to construction of EC-RLL codes is presented. The new construction is based on some parity check matrix properties of a linear binary block code from which the new EC-RLL code is obtained

Tool for Effective Communication between a Drone Pilot and a Mission Commander

V súčasnosti je hlavným komunikačným kanálom hasičov a horskej záchrannej služby prenos hlasu cez rádio. Avšak, pri zvyšujúcom sa využití dronov v záchranných operáciách nemusí byť rádiová komunikácia dostatočná, najmä pokiaľ ide o komunikáciu medzi pilotmi dronov a veliteľmi alebo operátormi misií. Pri použití výhradne rádiovej komunikácie sa musí pozemný tím a veliteľ spoliehať na verbálnu komunikáciu, čo môže viesť k obmedzenej možnosti komunikácie a strate alebo nesprávneho interpretovania pokynov. Pre odstránenie tejto prekážky som sa rozhodol vyvinúť dve aplikácie - jednu pre pilota dronov a druhú pre veliteľa jednotky. Aplikácia pre pilota obsahuje rozhranie potrebné na ovládanie dronu, zatiaľ čo aplikácia pre veliteľa sa pripája k aplikácii pre pilota a poskytuje prístup k videu z drona a ďalším dôležitým informáciám. Veliteľ môže posielať vizuálnu spätnú väzbu pilotovi kreslením do videa, umiestňovaním ikon anotácií alebo posielaním príkazov pre presnejšiu spoluprácu medzi dronom a pozemným tímom. Keďže výsledné aplikácie fungujú ako samostatný nezávislý systém, nie je komunikácia prostredníctvom nich náchylná na preťaženie rádiovej komunikácie, čo zaručuje, že príkazy nie sú stratené a že sa dá použiť aj v prípade, že rádiová komunikácia zlyhá.Nowadays, the primary communication channel for firefighters and mountain rescue units is voice transferred over the radio. However, radio communication might not be sufficient enough with the increasing use of drones in rescue operations, especially for communication between drone pilots and mission commanders or operators. When relying solely on radio communication, the ground team and the commander have to depend on verbal communication alone, which can lead to restricted communication and the possibility of missed or misinterpreted instructions. To address this, I developed two applications - one for the drone pilot and one for the unit commander. The pilot app includes the interface necessary for flying the drone, while the commander app connects to the pilot app and provides access to the drone video feed and other important information. The commander can send visual feedback to the pilot by drawing into the video feed, placing annotation icons, or sending flight commands for more precise cooperation between the drone and the ground team. As the solution is a stand-alone system, it is not susceptible to radio communication overload, which guarantees that commands are not lost and that it can be used even when the radio fails.

Tool for Effective Communication between a Drone Pilot and a Mission Commander

Nowadays, the primary communication channel for firefighters and mountain rescue units is voice transferred over the radio. However, radio communication might not be sufficient enough with the increasing use of drones in rescue operations, especially for communication between drone pilots and mission commanders or operators. When relying solely on radio communication, the ground team and the commander have to depend on verbal communication alone, which can lead to restricted communication and the possibility of missed or misinterpreted instructions. To address this, I developed two applications - one for the drone pilot and one for the unit commander. The pilot app includes the interface necessary for flying the drone, while the commander app connects to the pilot app and provides access to the drone video feed and other important information. The commander can send visual feedback to the pilot by drawing into the video feed, placing annotation icons, or sending flight commands for more precise cooperation between the drone and the ground team. As the solution is a stand-alone system, it is not susceptible to radio communication overload, which guarantees that commands are not lost and that it can be used even when the radio fails

Retrospective analysis of quantitative electroencephalography changes in a dissimulating patient after dying by suicide: A single case report

We present the case of a 49-year-old man who was diagnosed with depressive disorder, with the first episode having a strong reactive factor. He was involuntarily admitted to a psychiatric hospital after a failed attempt at taking his own life, where he responded to psychotherapy and antidepressant therapy, as evidenced by a >60% reduction in his MADRS total score. He was discharged after 10 days of treatment, denied having suicidal ideations, and was motivated to follow the recommended outpatient care. The risk for suicide during hospitalization was also assessed using suicide risk assessment tools and psychological assessments, including projective tests. The patient underwent a follow-up examination with an outpatient psychiatrist on the 7th day after discharge, during which the suicide risk assessment tool was administered. The results indicated no acute suicide risk or worsening of depressive symptoms. On the 10th day after discharge, the patient took his own life by jumping out of the window of his flat. We believe that the patient had dissimulated his symptoms and possessed suicidal ideations, which were not detected despite repeated examinations specifically designed to assess suicidality and depression symptoms. We retrospectively analyzed his quantitative electroencephalography (QEEG) records to evaluate the change in prefrontal theta cordance as a potentially promising biomarker of suicidality, given the inconclusive results of studies published to date. An increase in prefrontal theta cordance value was found after the first week of antidepressant therapy and psychotherapy in contrast to the expected decrease due to the fading of depressive symptoms. As demonstrated by the provided case study, we hypothesized that prefrontal theta cordance may be an EEG indicator of a higher risk of non-responsive depression and suicidality despite therapeutic improvement

Psychosocial Impact of Huntington’s Disease and Incentives to Improve Care for Affected Families in the Underserved Region of the Slovak Republic

Introduction: Huntington’s disease (HD) is often on the margin of standard medical practice due to its low prevalence, the lack of causal treatment, and the typically long premanifest window prior to the onset of the symptoms, which contrasts with the long-lasting burden that the disease causes in affected families. Methods: To capture these socio-psychological aspects of HD and map the experiences of affected individuals, persons at risk of HD, and caregivers, we created a questionnaire using a qualitative research approach. The questionnaire containing 16 questions was conducted online for a period of three months through patient associations in Slovakia and their infrastructures. Results: In total, we received 30 responses. The survey results, in particular, indicate insufficient counselling by physicians with explicitly missing information about the possibility of preimplantation genetic diagnostic. There was also a necessity to improve comprehensive social and health care in the later stages of the disease, raise awareness of the disease in the general health community, and provide more information on ongoing clinical trials. Conclusion: The psychosocial effects, as well as the burden, can be mitigated by comprehensive genetic counselling as well as reproductive and financial guidelines and subsequent therapeutic programs to actively support patients, caregivers, children, and adolescents growing up in affected families, preferably with the help of local HD community association. Limitations: We have used online data collection to reach a wider HD community, but at the same time, we are aware that the quality of the data we would obtain through face-to-face interviews would be considerably better. Therefore, future studies need to be conducted to obtain more detailed information