Integrating an exit choice model into a microscopic crowd dynamics model is an essential approach for obtaining more
efficient evacuation model. We describe various aspects of decision-making capability of an existing rule-based exit
choice model for evacuation processes. In simulations, however, the simulated evacuees clogging at exits have behaved
non-intelligently, namely they do not give up their exits for better ones for safer egress. We refine the model to endow
the individuals with the ability to leave their exits due to dynamic changes by modifying the model of their excitement
resulted from the source of panic. This facilitates the approximately equal crowd size at exits for being until the end
of the evacuation process, and thereby the model accomplishes more optimal evacuation. For further intelligence, we
introduce the prediction factor that enables higher probability of equally distributing evacuees at exits. A simulation to
validate the contribution is performed, and the results are analyzed and compared with the original model.
Food waste has adverse economic, social, and environmental impacts and increases the prevalence of food insecurity. Panic buying at the beginning of the COVID-19 outbreak raised serious concerns about a potential rise in food waste levels and higher pressure on waste management systems. This article aims to investigate the impact of COVID-19 on food waste behaviour and the extent to which it occurs using the systematic review method. A total of 38 articles were identified and reviewed following the Preferred Reporting Items for Systematic Reviews and Meta-Analyses (PRISMA) guidelines. The findings showed that the COVID-19 pandemic led to reductions in household food waste in most countries. Several changes in shopping and cooking behaviours, food consumption, and managing inventory and leftovers have occurred due to COVID-19. Based on these insights, we predicted that some desirable food-management habits would be retained, and others would roll back in the post-COVID-19 world. The review contributes to the food waste literature by offering a comprehensive overview of behavioural changes during the COVID-19 pandemic and future research directions.
Panic disorder (PD) being one of the most intensively investigated anxiety disorders is considered a heterogeneous psychiatric disease which has difficulties with early diagnosis. The disorder is recurrent and usually associated with low remission rates and high rates of relapse which may exacerbated social and quality of life, causes unnecessary cost and increased risk for complication and suicide. Current pharmacotherapy for PD are available but these drugs have slow therapeutic onset, several side effects and most patients do not fully respond to these standard pharmacological treatments. Ongoing investigations indicate the need for new and promising agents for the treatment of PD. This article will cover the importance of immediate and proper treatment, the gap in the current management of PD with special emphasis on pharmacotherapy, and evidence regarding the novel anti-panic drugs including the drugs in developments such as metabotropic glutamate (mGlu 2/3) agonist and levetiracetam. Preliminary results suggest the anti-panic properties and the efficacy of duloxetine, reboxetine, mirtazapine, nefazodone, risperidone and inositol as a monotherapy drug. Apart for their effectiveness, the aforementioned compounds were generally well tolerated compared to the standard available pharmacotherapy drugs, indicating their potential therapeutic usefulness for ambivalent and hypervigilance patient. Further strong clinical trials will provide an ample support to these novel compounds as an alternative monotherapy for PD treatment-resistant patient.
The dysbindin-1 (dystrobrevin-binding protein-1 [DTNBP-1]) gene has repeatedly been shown to be associated with psychotic disorder across diverse populations. In this study, we attempted to investigate the association of the rs3213207 (P1635) genetic polymorphism of the DTNBP1 gene with methamphetamine dependence and with methamphetamine-induced psychosis, manic episodes, and panic disorder in a male Malaysian population.
This paper reports the result of a brief therapy attempt at treating panic in a busy outpatient psychiatric clinic. The patients were cases of panic referred from the various outpatient clinics within the hospital complex. The patients were divided into three groups at random using one of three modalities of treatment, i.e. cognitive behaviour therapy (CBT), CBT and Fluvoxamine (FVX), and FVX alone. The therapy was aimed for a maximum of nine sessions after which the patients were to be discharged. There were 14 patients in each group. The results show that all the groups were similar in the severity and scores pre treatment but after the different types of treatment there was a significant difference among them. The FVX alone group, showed significant improvement from the pretreatment levels but did not show as much improvement as the other groups and the mean score was only 9.07 after nine sessions. The best group was the CBT in combination with FVX. This indicates that the best way to treat panic is to combine drug treatment and psychological treatment. It is also shown from the study that the combination group requires less FVX than the FVX alone group. This finding has implications for the treatment of panic at the family physician clinic.
Study site: Psychiatric clinic, Hospital Universiti Sains Malaysia
FAAH is a membrane enzyme that terminates the activity of a large class of endogenous signaling lipids. Recent studies suggest that the FAAH Pro129Thr polymorphism is a common mutation in the FAAH gene that is significantly associated with drug-addictive traits. This study investigated the association of the Pro129Thr polymorphism of the FAAH gene with methamphetamine dependence, methamphetamine-induced psychosis, manic episodes and panic disorder in a Malaysian population.
The world is now plagued by a pandemic of unprecedented nature caused by a novel, emerging, and still poorly understood infectious disease, coronavirus disease 2019 (COVID-19) (Wu and McGoogan, 2020). In addition to the rapidly growing body of scientific and medical literature that is being published, extensive public reports and stories in both the traditional media and social media have served to generate fear, panic, stigmatization, and instances of xenophobia (Zarocostas, 2020).
This paper reports a clinical case study on the effectiveness of Cognitive-Behavioral Treatment (CBT) in treating panic attack with agoraphobia in a local health psychology clinic. M.N., a 24 year old male, complained of nightmares, heart palpitations, sweating, tremors and fearful feelings for the past one and a half years. He felt anxious about going to crowded places such as bus stations, night markets, supermarkets, and mosques and being left alone in any place which he was not familiar with. This case study adopted an ABC design whereby the subject was assessed at three different phases: pre-treatment, mid-treatment and post-treatment. Four standard assessment measures were administered: Beck Anxiety Inventory (BAI), Beck Depression Inventory (BDI), Anxiety Scale of Minnesota Multiphasic Personality Inventory-2 (MMPI-2) and State-Trait Anxiety Inventory (STAI). The subject responded well to 12 sessions of intervention employed in the study based on CBT model and this could be noticed by minimal score on the entire psychological test administered. The application of behavioral and cognitive strategies became more effective due to patient’s ability to understand and also due to his cooperative behavior. He responded well to imagery exposure and in-vivo gradual exposure and successfully went to shopping malls, used lifts at Kuala Lumpur Tower, went to night markets and used public transport.
The main objectives in this study were to determine the percentage of psychiatric comorbidity among treatment seeking opioid dependents in Klang Valley. A cross sectional study of opioid dependence patients was conducted between December 2007 and May 2008 at ten community-based drug substitution therapy clinics in Klang Valley. A total of 204 opioid dependence patients participated in the study using the structured clinical interview for DSM-IV Axis I disorders
(SCID-I) as its instruments. The percentage of psychiatric comorbidity among opioid dependents was 43.6%. Major depressive disorder had the highest prevalence at 32.6%, followed by dysthymia at 23.6% and Panic disorder at 14.6%. Psychiatric comorbidity were found to have significant differences (p<0.05) in connection with history of polysubstance abuse, previous history of court sentences (legal status) and family history of psychiatric illnesses. This study showed that the percentage of psychiatric comorbidity is high among the opioid dependents. It highlights the urgent need for the psychiatric comorbidity to be assessed and early intervention is important for this group of patients.
The objective of this study was to describe preliminary experience with moclobemide in the treatment of depressive disorders in the University outpatient clinic in Malaysia. Twenty patients who satisfied DSM III R criteria for depressive disorders and scored more than 16 on the Hamilton Rating Depression Score at the initial interview were recruited into this open study. The primary diagnosis of 4 patients was later ascertained to be panic disorder(2), schizophrenia(1) and social phobia(1). Patients rated themselves as improved by first follow up (7-14 days), and rated their depression as very mild to mild by the third follow up visit (ie at a mean of 46 days). Side effects were minimal and compliance good.
Study site: outpatient psychiatric clinic at the General Hospital, Kuala
Lumpur.
"Comfort women" refers to young women and girls who were forced into sexual slavery by the Imperial Japanese military during World War II. They were abducted from their homes in countries under Imperial Japanese rule, mostly from Korea, and the rest from China, Philippines, Malaysia, Taiwan, Indonesia, the Netherlands, etc. "Comfort women" endured extreme trauma involving rape, sexual torture, physical abuse, starvation, threats of death, and witnessed many others being tortured and killed. This article reviews all the studies that have investigated the psychiatric or psychosocial sequelae of the survivors of the Japanese military sexual slavery. Most importantly, a recent study which conducted a psychiatric evaluation on the former "comfort women" currently alive in South Korea is introduced. The participants' unmarried rate was relatively high and their total fertility rate was relatively low. Majority of the participants reported having no education and being the low economic status. They showed high current and lifetime prevalence of posttraumatic disorder, major depressive disorder, somatic symptom disorder, social anxiety disorder, panic disorder, and alcohol use disorder. Participants showed high suicidality and majority of the participants still reported being ashamed of being former "comfort women" after all these years. This article high-lights the fact that the trauma has affected the mental health and social functioning of former "comfort women" throughout their lives, and even to the present day.